David "DHH" Heinemeier Hansson (@dhh) is the creator of Ruby on Rails, founder and CTO at Basecamp (formerly 37signals), and the best-selling co-author of Rework and Remote: Office Not Required. Oh, and he went from not having a driver's license at 25 to winning, at 34, the 24 Hours of Le Mans race, one of the most prestigious automobile races in the world. It is often called the "Grand Prix of endurance and efficiency." David is one of the most outspoken technologists out there. He is not one to hide his opinions or mince words. In this episode, we cover a lot, including... The power of being outspoken Running a profitable business without venture capital Stoic philosophy Flow space Parallels across disciplines DHH's rules for creating excellence And much, much more... Please enjoy my conversation with DHH! Show notes and links for this episode can be found at www.fourhourworkweek.com/podcast. This podcast is brought to you by Four Sigmatic. I reached out to these Finnish entrepreneurs after a very talented acrobat introduced me to one of their products, which blew my mind (in the best way possible). It is mushroom coffee featuring chaga. It tastes like coffee, but there are only 40 milligrams of caffeine, so it has less than half of what you would find in a regular cup of coffee. I do not get any jitters, acid reflux, or any type of stomach burn. It put me on fire for an entire day, and I only had half of the packet. People are always asking me what I use for cognitive enhancement right now, this is the answer. You can try it right now by going to foursigmatic.com/tim and using the code Tim to get 20 percent off your first order. If you are in the experimental mindset, I do not think you'll be disappointed. This podcast is also brought to you by Wealthfront. Wealthfront is a massively disruptive (in a good way) set-it-and-forget-it investing service led by technologists from places like Apple. It has exploded in popularity in the last two years and now has more than $2.5B under management. Why? Because you can get services previously limited to the ultra-wealthy and only pay pennies on the dollar for them, and it's all through smarter software instead of retail locations and bloated sales teams. Check out wealthfront.com/tim, take their risk assessment quiz, which only takes 2-5 minutes, and they'll show you for free the exact portfolio they'd put you in. If you want to just take their advice and do it yourself, you can. Well worth a few minutes to explore: wealthfront.com/tim.  *** If you enjoy the podcast, would you please consider leaving a short review on Apple Podcasts/iTunes? It takes less than 60 seconds, and it really makes a difference in helping to convince hard-to-get guests. I also love reading the reviews! 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. Interested in sponsoring the podcast? Visit tim.blog/sponsor and fill out the form. Discover Tim’s books: tim.blog/books. Follow Tim: Twitter: twitter.com/tferriss  Instagram: instagram.com/timferriss Facebook: facebook.com/timferriss  YouTube: youtube.com/timferriss Past 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.

This episode was a blast. It was a tropical exploration of biology, life extension, and all good things. This included a lot of Carmenere wine and good old-fashioned ball busting. I was joined by: Peter Attia, MD (@peterattiamd), who rejoins the show (catch his last appearance here). He is a former ultra-endurance athlete (e.g., swimming 25-mile races), compulsive self-experimenter, and one of the most fascinating human beings I know. He is one of my go-to doctors for anything performance- or longevity-related. Peter earned his MD from Stanford University and holds a BSc in mechanical engineering and applied mathematics from Queen's University in Kingston, Ontario. He did his residency in general surgery at the Johns Hopkins Hospital, and conducted research at the National Cancer Institute under Dr. Steven Rosenberg, where Peter focused on the role of regulatory T cells in cancer regression and other immune-based therapies for cancer. David M. Sabatini, M.D., Ph.D. (@DMSabatini) of MIT's Whitehead Institute for Biomedical Research. David is on a short list for the Nobel Prize for his work in elucidating the role of rapamycin and mTOR. Navdeep S. Chandel, Ph.D., the David W. Cugell Professor of Medicine and Cell Biology at the Feinberg School of Medicine, Northwestern University. Nav established his lab there to further the understanding of how mitochondria work as signaling organelles to regulate physiology and pathology. He is also the author of Navigating Metabolism. Perhaps you've heard of people in Silicon Valley taking metformin, rapamycin, and supplements for longevity. In this conversation, we dig into the real science, what current evidence supports (or doesn't), and other important matters like how to staple properly, which fonts reasonable people use, and why Borat is a genius. Enjoy! Show notes and links for this episode can be found at www.fourhourworkweek.com/podcast. This podcast is brought to you by 99Designs, the world's largest marketplace of graphic designers. I have used them for years to create some amazing designs. When your business needs a logo, website design, business card, or anything you can imagine, check out 99Designs. I used them to rapid prototype the cover for The 4-Hour Body, and I've also had them help with display advertising and illustrations. If you want a more personalized approach, I recommend their 1-on-1 service. You get original designs from designers around the world. The best part? You provide your feedback, and then you end up with a product that you're happy with or your money back. Click this link and get a free $99 upgrade. Give it a test run. This podcast is also brought to you by Four Sigmatic. I reached out to these Finnish entrepreneurs after a very talented acrobat introduced me to one of their products, which blew my mind (in the best way possible). It is mushroom coffee featuring chaga. It tastes like coffee, but there are only 40 milligrams of caffeine, so it has less than half of what you would find in a regular cup of coffee. I do not get any jitters, acid reflux, or any type of stomach burn. It put me on fire for an entire day, and I only had half of the packet. People are always asking me what I use for cognitive enhancement -- right now, this is the answer. You can try it right now by going to foursigmatic.com/tim and using the code Tim to get 20 percent off your first order. If you are in the experimental mindset, I do not think you'll be disappointed. *** If you enjoy the podcast, would you please consider leaving a short review on Apple Podcasts/iTunes? It takes less than 60 seconds, and it really makes a difference in helping to convince hard-to-get guests. I also love reading the reviews! 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. Interested in sponsoring the podcast? Visit tim.blog/sponsor and fill out the form. Discover Tim’s books: tim.blog/books. Follow Tim: Twitter: twitter.com/tferriss  Instagram: instagram.com/timferriss Facebook: facebook.com/timferriss  YouTube: youtube.com/timferriss Past 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.