English computer scientist, essayist, entrepreneur, investor, and author. Known for his work on the programming language Lisp, co-founding Viaweb (later Yahoo! Store), and co-founding Y Combinator.

Author, modern Stoic, public-relations strategist, owner of the Painted Porch Bookshop, and host of the podcast The Daily Stoic. Notable works include The Obstacle Is the Way, Ego is the Enemy, Stillness is the Key, and Lives of the Stoics.

Tweets about DTC, Growth mktg, bootstrapping, investing and @cardinals. Founder & CEO of @GatewayX. Co-founder @Ampush. Married to @tweepika. Papa to R&S.

physics / ai / invention / energy / art / shitposting "the girl from the future". 🏳️‍🌈/ally

Lawyer. Founder at http://BetterSeriesA.co. Making Series A financings better for startups 🚀