Max Levchin (@mlevchin) is a serial entrepreneur and investor in 100+ startups. He's the founder and CEO of Affirm, the payment network powering consumer purchases and merchant growth. An original PayPal co-founder, Max served as CTO until its 2002 acquisition by eBay.This episode is brought to you by:ProLon: science-backed Fasting Mimicking Diet that helps activate cellular renewal through fasting, while still eating nourishing meals: ProlonLife.com/TimMonarch track, budget, plan, and do more with your money: Monarch.com/Tim Shopify global commerce platform, providing tools to start, grow, market, and manage a retail business: Shopify.com/timTimestamps:[00:00:00] Start.[00:02:50] The Ronin line that rewired how Max makes every decision.[00:06:09] Paprika-style brain-computer interfaces.[00:09:09] PayPal's founders lived inside a Neal Stephenson novel.[00:19:21] Transformation via Neuromancer and Snow Crash.[00:23:40] The book that found Max his wife.[00:29:24] The real secret to a great marriage.[00:38:29] What's worth tracking, and what's not.[00:44:13] A scrawny kid, a clarinet, and a Kyiv velodrome.[00:46:55] What going all-out on a bike actually gives you.[00:51:02] The mantra by which Max rides.[00:53:02] A Soviet kid's fear of socialism.[01:02:48] Making a profit without destroying society.[01:04:31] What is Affirm, and why did every banker say it would fail?[01:20:18] Why the best mathematicians eschew the lending industry.[01:23:50] Does agentic commerce break Affirm, or supercharge it?[01:28:01] A PhD-level financial advisor in everyone's pocket.[01:29:58] How close are we to buying anything through one AI chat?[01:36:32] Improving your coffee: cheap, intermediate, and Bugatti options.[01:44:33] The books every first-time founder should actually read.[01:48:08] Claude Shannon, Ed Thorp, and the joy of playful genius.[01:51:00] Why physical books still beat every digital reading experience.[01:51:44] Parting thoughts.*For show notes and past guests on The Tim Ferriss Show, please visit tim.blog/podcast.For deals from sponsors of The Tim Ferriss Show, please visit tim.blog/podcast-sponsorsSign 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/timferrissYouTube: youtube.com/timferrissFacebook: facebook.com/timferriss LinkedIn: linkedin.com/in/timferrissSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.