Tim Ferriss: Bestselling Author, Human Guinea Pig

Byznys

Podnikání

#562: Dr. Michio Kaku — Exploring Time Travel, the Beauty of Physics, Parallel Universes, the Mind of God, String Theory, Lessons from Einstein, and More

The Tim Ferriss Show

Tim Ferriss is a self-experimenter and bestselling author, best known for The 4-Hour Workweek, which has been translated into 40+ languages. Newsweek calls him "the world's best human guinea pig," and The New York Times calls him "a cross between Jack Welch and a Buddhist monk." In this show, he deconstructs world-class performers from eclectic areas (investing, chess, pro sports, etc.), digging deep to find the tools, tactics, and tricks that listeners can use.

Dr. Michio Kaku — Exploring Time Travel, the Beauty of Physics, Parallel Universes, the Mind of God, String Theory, Lessons from Einstein, and More | Brought to you by <a href="http://99designs.com/tim" rel="noopener noreferrer" target="_blank">99designs</a> global design platform, <a href="http://athleticgreens.com/tim" rel="noopener noreferrer" target="_blank">Athletic Greens</a> all-in-one nutritional supplement, and <a href="http://wealthfront.com/tim" rel="noopener noreferrer" target="_blank">Wealthfront</a> automated investing. More on all three below.Dr. Michio Kaku (<a href="https://twitter.com/michiokaku" rel="noopener noreferrer" target="_blank">@michiokaku</a>) is a professor of theoretical physics at The City College of New York, co-founder of string field theory, and the author of several widely acclaimed science books, including <a href="https://www.amazon.com/Beyond-Einstein-Cosmic-Theory-Universe/dp/0385477813/?tag=offsitoftimfe-20" rel="noopener noreferrer" target="_blank">Beyond Einstein</a>, <a href="https://www.amazon.com/Future-Humanity-Terraforming-Interstellar-Immortality-ebook/dp/B07173C875/?tag=offsitoftimfe-20" rel="noopener noreferrer" target="_blank">The Future of Humanity</a>, <a href="https://www.amazon.com/Future-Mind-Scientific-Understand-Enhance-ebook/dp/B00EX4E258/?tag=offsitoftimfe-20" rel="noopener noreferrer" target="_blank">The Future of the Mind</a>, <a href="https://www.amazon.com/Hyperspace-Scientific-Universes-Dimension-1994-03-24/dp/B01FIX2Q7S/?tag=offsitoftimfe-20" rel="noopener noreferrer" target="_blank">Hyperspace</a>, <a href="https://www.amazon.com/Physics-Future-Science-Shape-Destiny/dp/0307473333/?tag=offsitoftimfe-20" rel="noopener noreferrer" target="_blank">Physics of the Future</a>, <a href="https://www.amazon.com/Physics-Impossible-Scientific-Exploration-Teleportation/dp/0385520697/?tag=offsitoftimfe-20" rel="noopener noreferrer" target="_blank">Physics of the Impossible</a>, and his latest, <a href="https://www.amazon.com/God-Equation-Quest-Theory-Everything/dp/0385542747/?tag=offsitoftimfe-20" rel="noopener noreferrer" target="_blank">The God Equation: The Quest for a Theory of Everything</a>.He is the science correspondent for CBS This Morning, the host of the radio programs Science Fantastic and Exploration, and a host of several science TV specials for the BBC and the Discovery and Science Channels.Please enjoy!This episode is brought to you by <a href="http://wealthfront.com/Tim" rel="noopener noreferrer" target="_blank">Wealthfront</a>! <a href="http://wealthfront.com/Tim" rel="noopener noreferrer" target="_blank">Wealthfront</a> pioneered the automated investing movement, sometimes referred to as ‘robo-advising,’ and they currently oversee $20 billion of assets for their clients. It takes about three minutes to sign up, and then Wealthfront will <a href="http://wealthfront.com/Tim" rel="noopener noreferrer" target="_blank">build you a globally diversified portfolio of ETFs based on your risk appetite</a> and manage it for you at an incredibly low cost. Smart investing should not feel like a rollercoaster ride. Let the professionals do the work for you. Go to <a href="http://wealthfront.com/Tim" rel="noopener noreferrer" target="_blank">Wealthfront.com/Tim</a> and open a Wealthfront account today, and you’ll <a href="http://wealthfront.com/Tim" rel="noopener noreferrer" target="_blank">get your first $5,000 managed for free, for life</a>. <a href="http://wealthfront.com/Tim" rel="noopener noreferrer" target="_blank">Wealthfront</a> will automate your investments for the long term. <a href="http://wealthfront.com/Tim" rel="noopener noreferrer" target="_blank">Get started today at Wealthfront.com/Tim</a>.This episode is also brought to you by <a href="http://99designs.com/tim" rel="noopener noreferrer" target="_blank">99designs</a>, the global creative platform by Vista that makes it easy for designers and clients to work together to create designs they love. Its creative process has become the go-to solution for businesses, agencies, and individuals, and I have used it for years to help with display advertising and illustrations and to rapid-prototype the cover for The Tao of Seneca. Whether your business needs a logo, website design, business card, or anything you can imagine, check out <a href="http://99designs.com/tim" rel="noopener noreferrer" target="_blank">99designs</a>.You can work with multiple designers at once to get a bunch of different ideas or hire the perfect designer for your project based on their style and industry specialization. It’s simple to review concepts and leave feedback so you’ll end up with a design that you’re happy with. <a href="http://99designs.com/tim" rel="noopener noreferrer" target="_blank">Click this link and get $20 off plus a $99 upgrade</a>.This episode is also brought to you by <a href="https://www.athleticgreens.com/tim" rel="noopener noreferrer" target="_blank">Athletic Greens</a>. I get asked all the time, “If you could only use one supplement, what would it be?” My answer is usually <a href="https://www.athleticgreens.com/tim" rel="noopener noreferrer" target="_blank">AG1</a> by <a href="https://www.athleticgreens.com/tim" rel="noopener noreferrer" target="_blank">Athletic Greens</a>, my all-in-one nutritional insurance. I recommended it in The 4-Hour Body in 2010 and did not get paid to do so. I do my best with nutrient-dense meals, of course, but <a href="https://www.athleticgreens.com/tim" rel="noopener noreferrer" target="_blank">AG</a> further covers my bases with vitamins, minerals, and whole-food-sourced micronutrients that support gut health and the immune system. Right now, <a href="https://www.athleticgreens.com/tim" rel="noopener noreferrer" target="_blank">Athletic Greens</a> is offering you their Vitamin D Liquid Formula free with your first subscription purchase—a vital nutrient for a strong immune system and strong bones. Visit <a href="https://www.athleticgreens.com/tim" rel="noopener noreferrer" target="_blank">AthleticGreens.com/Tim</a> to claim this special offer today and receive the free Vitamin D Liquid Formula (and five free travel packs) with your first subscription purchase! That’s up to a one-year supply of Vitamin D as added value when you try their delicious and comprehensive all-in-one daily greens product.For show notes and past guests, please visit <a href="https://tim.blog/podcast/?utm_source=podcast&utm_medium=podcast&utm_campaign=podcast-description" rel="noopener noreferrer" target="_blank">tim.blog/podcast</a>.Sign up for Tim’s email newsletter (“5-Bullet Friday”) at <a href="https://go.tim.blog/5-bullet-friday-1/" rel="noopener noreferrer" target="_blank">tim.blog/friday</a>.For transcripts of episodes, go to <a href="http://tim.blog/transcripts" rel="noopener noreferrer" target="_blank">tim.blog/transcripts</a>.Discover Tim’s books: <a href="http://tim.blog/books" rel="noopener noreferrer" target="_blank">tim.blog/books</a>.Follow Tim:Twitter: <a href="https://twitter.com/tferriss" rel="noopener noreferrer" target="_blank">twitter.com/tferriss</a> Instagram: <a href="https://instagram.com/timferriss/" rel="noopener noreferrer" target="_blank">instagram.com/timferriss</a>Facebook: <a href="https://www.facebook.com/TimFerriss/" rel="noopener noreferrer" target="_blank">facebook.com/timferriss</a> YouTube: <a href="https://www.youtube.com/timferriss" rel="noopener noreferrer" target="_blank">youtube.com/timferriss</a>Past guests on <a href="http://tim.blog/podcast" rel="noopener noreferrer" target="_blank">The Tim Ferriss Show</a> include <a href="https://tim.blog/2020/12/08/jerry-seinfeld/" rel="noopener noreferrer" target="_blank">Jerry Seinfeld</a>, <a href="https://tim.blog/2020/06/26/hugh-jackman/" rel="noopener noreferrer" target="_blank">Hugh Jackman</a>, <a href="https://tim.blog/2020/04/16/jane-goodall/" rel="noopener noreferrer" target="_blank">Dr. Jane Goodall</a>, <a href="https://tim.blog/2018/11/27/lebron-james-mike-mancias/" rel="noopener noreferrer" target="_blank">LeBron James</a>, <a href="https://tim.blog/2020/05/20/kevin-hart/" rel="noopener noreferrer" target="_blank">Kevin Hart</a>, <a href="https://tim.blog/2018/09/07/doris-kearns-goodwin-leadership/" rel="noopener noreferrer" target="_blank">Doris Kearns Goodwin</a>, <a href="https://tim.blog/2015/12/06/jamie-foxx/" rel="noopener noreferrer" target="_blank">Jamie Foxx</a>, <a href="https://tim.blog/2020/10/19/matthew-mcconaughey/" rel="noopener noreferrer" target="_blank">Matthew McConaughey</a>, <a href="https://tim.blog/2017/05/21/esther-perel/" rel="noopener noreferrer" target="_blank">Esther Perel</a>, <a href="https://tim.blog/2020/05/08/elizabeth-gilbert/" rel="noopener noreferrer" target="_blank">Elizabeth Gilbert</a>, <a href="https://tim.blog/2017/12/20/terry-crews-how-to-have-do-and-be-all-you-want/" rel="noopener noreferrer" target="_blank">Terry Crews</a>, <a href="https://tim.blog/2020/08/12/sia/" rel="noopener noreferrer" target="_blank">Sia</a>, <a href="https://tim.blog/2020/10/27/yuval-noah-harari/" rel="noopener noreferrer" target="_blank">Yuval Noah Harari</a>, <a href="https://tim.blog/2016/06/21/malcolm-gladwell/" rel="noopener noreferrer" target="_blank">Malcolm Gladwell</a>, <a href="https://tim.blog/2020/05/27/secretary-madeleine-albright/" rel="noopener noreferrer" target="_blank">Madeleine Albright</a>, <a href="https://tim.blog/2017/03/30/cheryl-strayed/" rel="noopener noreferrer" target="_blank">Cheryl Strayed</a>, <a href="https://tim.blog/2019/02/18/jim-collins/" rel="noopener noreferrer" target="_blank">Jim Collins</a>, <a href="https://tim.blog/2020/11/11/mary-karr/" rel="noopener noreferrer" target="_blank">Mary Karr,</a> <a href="https://tim.blog/2014/10/21/brain-pickings/" rel="noopener noreferrer" target="_blank">Maria Popova</a>, <a href="https://tim.blog/2020/05/15/sam-harris-2/" rel="noopener noreferrer" target="_blank">Sam Harris</a>, <a href="https://tim.blog/2021/01/21/michael-phelps-grant-hackett/" rel="noopener noreferrer" target="_blank">Michael Phelps</a>, <a href="https://tim.blog/2020/01/16/bob-iger/" rel="noopener noreferrer" target="_blank">Bob Iger</a>, <a href="https://tim.blog/2019/10/31/edward-norton-motherless-brooklyn/" rel="noopener noreferrer" target="_blank">Edward Norton</a>, <a href="https://tim.blog/2015/02/02/arnold-schwarzenegger/" rel="noopener noreferrer" target="_blank">Arnold Schwarzenegger</a>, <a href="https://tim.blog/2014/06/24/neil-strauss/" rel="noopener noreferrer" target="_blank">Neil Strauss</a>, <a href="https://tim.blog/2019/09/12/ken-burns/" rel="noopener noreferrer" target="_blank">Ken Burns</a>, <a href="https://tim.blog/2017/08/26/maria-sharapova/" rel="noopener noreferrer" target="_blank">Maria Sharapova</a>, <a href="https://tim.blog/2016/05/29/marc-andreessen/" rel="noopener noreferrer" target="_blank">Marc Andreessen</a>, <a href="https://tim.blog/2019/03/28/neil-gaiman/" rel="noopener noreferrer" target="_blank">Neil Gaiman</a>, <a href="https://tim.blog/2019/10/03/neil-degrasse-tyson/" rel="noopener noreferrer" target="_blank">Neil de Grasse Tyson</a>, <a href="https://tim.blog/2016/09/21/jocko-willink-on-discipline-leadership-and-overcoming-doubt/" rel="noopener noreferrer" target="_blank">Jocko Willink</a>, <a href="https://tim.blog/2020/12/03/daniel-ek/" rel="noopener noreferrer" target="_blank">Daniel Ek</a>, <a href="https://tim.blog/2020/09/08/kelly-slater/" rel="noopener noreferrer" target="_blank">Kelly Slater</a>, <a href="https://tim.blog/2019/11/27/peter-attia-fasting-metformin-longevity/" rel="noopener noreferrer" target="_blank">Dr. Peter Attia</a>, <a href="https://tim.blog/2016/02/10/seth-godin/" rel="noopener noreferrer" target="_blank">Seth Godin</a>, <a href="https://tim.blog/2018/09/25/howard-marks/" rel="noopener noreferrer" target="_blank">Howard Marks</a>, <a href="https://tim.blog/2020/02/06/brene-brown-striving-self-acceptance-saving-marriages/" rel="noopener noreferrer" target="_blank">Dr. Brené Brown</a>, <a href="https://tim.blog/2019/04/09/eric-schmidt/" rel="noopener noreferrer" target="_blank">Eric Schmidt</a>, <a href="https://tim.blog/2020/05/01/michael-lewis/" rel="noopener noreferrer" target="_blank">Michael Lewis</a>, <a href="https://tim.blog/2018/03/08/joe-gebbia-co-founder-of-airbnb/" rel="noopener noreferrer" target="_blank">Joe Gebbia</a>, <a href="https://tim.blog/2018/05/06/michael-pollan-how-to-change-your-mind/" rel="noopener noreferrer" target="_blank">Michael Pollan</a>, <a href="https://tim.blog/2021/03/01/jordan-peterson/" rel="noopener noreferrer" target="_blank">Dr. Jordan Peterson</a>, <a href="https://tim.blog/2017/05/31/vince-vaughn/" rel="noopener noreferrer" target="_blank">Vince Vaughn</a>, <a href="https://tim.blog/2020/04/23/brian-koppelman/" rel="noopener noreferrer" target="_blank">Brian Koppelman</a>, <a href="https://tim.blog/2019/05/07/ramit-sethi/" rel="noopener noreferrer" target="_blank">Ramit Sethi</a>, <a href="https://tim.blog/2020/11/18/dax-shepard/" rel="noopener noreferrer" target="_blank">Dax Shepard</a>, <a href="https://tim.blog/2014/10/15/money-master-the-game/" rel="noopener noreferrer" target="_blank">Tony Robbins</a>, <a href="https://tim.blog/2020/05/18/jim-dethmer/" rel="noopener noreferrer" target="_blank">Jim Dethmer</a>, <a href="https://tim.blog/2020/11/19/dan-harris/" rel="noopener noreferrer" target="_blank">Dan Harris</a>, <a href="https://tim.blog/2017/09/13/ray-dalio/" rel="noopener noreferrer" target="_blank">Ray Dalio</a>, <a href="https://tim.blog/2015/08/18/the-evolutionary-angel-naval-ravikant/" rel="noopener noreferrer" target="_blank">Naval Ravikant</a>, <a href="https://tim.blog/2021/03/08/vitalik-buterin-naval-ravikant/" rel="noopener noreferrer" target="_blank">Vitalik Buterin</a>, <a href="https://tim.blog/2021/03/16/elizabeth-lesser/" rel="noopener noreferrer" target="_blank">Elizabeth Lesser</a>, <a href="https://tim.blog/2019/04/18/amanda-palmer-2/" rel="noopener noreferrer" target="_blank">Amanda Palmer</a>, <a href="https://tim.blog/2021/02/18/katie-haun/" rel="noopener noreferrer" target="_blank">Katie Haun</a>, <a href="https://tim.blog/2017/10/09/richard-branson/" rel="noopener noreferrer" target="_blank">Sir Richard Branson</a>, <a href="https://tim.blog/2020/09/02/chuck-palahniuk/" rel="noopener noreferrer" target="_blank">Chuck Palahniuk</a>, <a href="https://tim.blog/2017/10/18/arianna-huffington/" rel="noopener noreferrer" target="_blank">Arianna Huffington</a>, <a href="https://tim.blog/2015/08/31/the-oracle-of-silicon-valley-reid-hoffman-plus-michael-mccullough/" rel="noopener noreferrer" target="_blank">Reid Hoffman</a>, <a href="https://tim.blog/2017/09/17/bill-burr/" rel="noopener noreferrer" target="_blank">Bill Burr</a>, <a href="https://tim.blog/2015/06/26/whitney-cummings/" rel="noopener noreferrer" target="_blank">Whitney Cummings</a>, <a href="https://tim.blog/2015/05/15/rick-rubin/" rel="noopener noreferrer" target="_blank">Rick Rubin</a>, <a href="https://tim.blog/2020/03/26/vivek-murthy/" rel="noopener noreferrer" target="_blank">Dr. Vivek Murthy</a>, <a href="https://tim.blog/2017/09/09/darren-aronofsky/" rel="noopener noreferrer" target="_blank">Darren Aronofsky</a>, and many more.See Privacy Policy at <a href="https://art19.com/privacy" rel="noopener noreferrer" target="_blank">https://art19.com/privacy</a> and California Privacy Notice at <a href="https://art19.com/privacy#do-not-sell-my-info" rel="noopener noreferrer" target="_blank">https://art19.com/privacy#do-not-sell-my-info</a>.

Brought to you by Athletic Greens all-in-one nutritional supplement, Wealthfront automated investing, and 99designs global design platform. Dr. Michio Kaku (@michiokaku) is a professor of theoretical physics at The City College of New York, co-founder of string field theory, and the author of several widely acclaimed science books, including Beyond Einstein, The Future of Humanity, The Future of the Mind, Hyperspace, Physics of the Future, Physics of the Impossible, and his latest, The God Equation: The Quest for a Theory of Everything.He is the science correspondent for CBS This Morning, the host of the radio programs Science Fantastic and Exploration, and a host of several science TV specials for the BBC and the Discovery and Science Channels.Please enjoy!*This episode is brought to you by Wealthfront! Wealthfront pioneered the automated investing movement, sometimes referred to as ‘robo-advising,’ and they currently oversee $20 billion of assets for their clients. It takes about three minutes to sign up, and then Wealthfront will build you a globally diversified portfolio of ETFs based on your risk appetite and manage it for you at an incredibly low cost. Smart investing should not feel like a rollercoaster ride. Let the professionals do the work for you. Go to Wealthfront.com/Tim and open a Wealthfront account today, and you’ll get your first $5,000 managed for free, for life. Wealthfront will automate your investments for the long term. Get started today at Wealthfront.com/Tim.This episode is also brought to you by 99designs, the global creative platform by Vista that makes it easy for designers and clients to work together to create designs they love. Its creative process has become the go-to solution for businesses, agencies, and individuals, and I have used it for years to help with display advertising and illustrations and to rapid-prototype the cover for The Tao of Seneca. Whether your business needs a logo, website design, business card, or anything you can imagine, check out 99designs.You can work with multiple designers at once to get a bunch of different ideas or hire the perfect designer for your project based on their style and industry specialization. It’s simple to review concepts and leave feedback so you’ll end up with a design that you’re happy with. Click this link and get $20 off plus a $99 upgrade.*This episode is also brought to you by Athletic Greens. I get asked all the time, “If you could only use one supplement, what would it be?” My answer is usually AG1 by Athletic Greens, my all-in-one nutritional insurance. I recommended it in The 4-Hour Body in 2010 and did not get paid to do so. I do my best with nutrient-dense meals, of course, but AG further covers my bases with vitamins, minerals, and whole-food-sourced micronutrients that support gut health and the immune system. Right now, Athletic Greens is offering you their Vitamin D Liquid Formula free with your first subscription purchase—a vital nutrient for a strong immune system and strong bones. Visit AthleticGreens.com/Tim to claim this special offer today and receive the free Vitamin D Liquid Formula (and five free travel packs) with your first subscription purchase! That’s up to a one-year supply of Vitamin D as added value when you try their delicious and comprehensive all-in-one daily greens product.*What piqued Michio’s curiosity about science at an early age — and what did he build in his garage with his parents’ grudging permission? [05:08]How did hydrogen bomb pioneer Edward Teller, the patron who paid Michio’s way through Harvard, react when he turned down his generous job offer to design hydrogen warheads in favor of probing the mysteries of The Big Bang? [10:20]Knowing his California-born parents had been locked up by the United States government in an internment camp on the basis of their Japanese heritage during WWII, did Michio have any reservations about serving the country during the Vietnam War? [11:30]The ingredients Michio feels are necessary for anyone to rise above any hardship. [12:53]What sci-fi had an impact on young Michio’s curiosity and passion to explore the mysteries of science? [14:47]Does Michio think Einstein underestimated philosophy’s potential for practical application? Are there any philosophies better suited than others for answering the universe’s big questions? Are there any questions that can’t be answered? [16:46]What constitutes burden of proof when it comes to science? [25:56]What is a parallel universe? [35:20]Why does the rate at which time moves vary depending on where it’s observed, and what are the implications of this phenomenon? [37:04]How does Michio think about consciousness? Is the term synonymous with self-awareness? [42:26]When Einstein pondered what it would take to “read the mind of God,” what kind of God was he imagining? For that matter, how does Michio think about the concept of God? [53:22]What is string theory, why is it controversial, and why are such controversies healthy for science? [58:50]What would be the practical applications of a theory of everything proven? What questions could we finally answer? [1:04:37]Does music play a part in how Michio contemplates physics? [1:09:52]Michio’s challenge to our listeners. [1:13:07]Why didn’t cosmologist George Gamow win the Nobel Prize for his work on proving the Big Bang theory? [1:13:36]Is there a career cost for research scientists who work to make science more accessible to the non-academic masses? What is the cost to society if there aren’t scientists willing to take that risk? [1:16:58]How are some scientists seemingly able to predict the future more accurately than others? What advancements does Michio foresee in the next couple of decades? [1:22:13]For listeners unfamiliar with the body of Michio’s work, where does he recommend they begin? [1:29:17]Michio’s favorite Einstein quote and other parting thoughts. [1:30:56]*For show notes and past guests, please visit tim.blog/podcast.Sign up for Tim’s email newsletter (“5-Bullet Friday”) at tim.blog/friday.For transcripts of episodes, go to tim.blog/transcripts.Discover Tim’s books: tim.blog/books.Follow Tim:Twitter: twitter.com/tferriss Instagram: instagram.com/timferrissFacebook: facebook.com/timferriss YouTube: youtube.com/timferrissPast guests on The Tim Ferriss Show include Jerry Seinfeld, Hugh Jackman, Dr. Jane Goodall, LeBron James, Kevin Hart, Doris Kearns Goodwin, Jamie Foxx, Matthew McConaughey, Esther Perel, Elizabeth Gilbert, Terry Crews, Sia, Yuval Noah Harari, Malcolm Gladwell, Madeleine Albright, Cheryl Strayed, Jim Collins, Mary Karr, Maria Popova, Sam Harris, Michael Phelps, Bob Iger, Edward Norton, Arnold Schwarzenegger, Neil Strauss, Ken Burns, Maria Sharapova, Marc Andreessen, Neil Gaiman, Neil de Grasse Tyson, Jocko Willink, Daniel Ek, Kelly Slater, Dr. Peter Attia, Seth Godin, Howard Marks, Dr. Brené Brown, Eric Schmidt, Michael Lewis, Joe Gebbia, Michael Pollan, Dr. Jordan Peterson, Vince Vaughn, Brian Koppelman, Ramit Sethi, Dax Shepard, Tony Robbins, Jim Dethmer, Dan Harris, Ray Dalio, Naval Ravikant, Vitalik Buterin, Elizabeth Lesser, Amanda Palmer, Katie Haun, Sir Richard Branson, Chuck Palahniuk, Arianna Huffington, Reid Hoffman, Bill Burr, Whitney Cummings, Rick Rubin, Dr. Vivek Murthy, Darren Aronofsky, and many more.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Aplikace Youradio Talk

Pro přehrání dalších podcastů se prosím registrujte.

#562: Dr. Michio Kaku — Exploring Time Travel, the Beauty of Physics, Parallel Universes, the Mind of God, String Theory, Lessons from Einstein, and More

Poslechněte si podcast