Paul Graham is an American computer programmer, essayist, and investor best known for co-founding Y Combinator, one of the most influential startup accelerators, and for his work in programming language design, particularly the Lisp dialects Arc and Bel. He is also recognized for his essays on startups, programming, and work, which have shaped modern startup culture and technical discourse.

Early life and education

Paul Graham was born in 1964 in Weymouth, England, and raised in Pittsburgh, Pennsylvania.^[S23] He earned his undergraduate degree from Cornell University, where he studied both philosophy and computer science.^[S23] He later completed a PhD in computer science at Harvard University under the supervision of Guy Steele.^[S23]

Career

Graham began his career as a programmer and entrepreneur. In 1995, he co-founded Viaweb, one of the first web-based applications, which allowed users to build and host online stores.^[S24] Written in Common Lisp, Viaweb enabled rapid feature deployment and was acquired by Yahoo! in 1998 for approximately $50 million, becoming Yahoo! Store.^[S24] The technical and operational lessons from Viaweb later informed the founding principles of Y Combinator.

In 2005, Graham co-founded Y Combinator with Jessica Livingston, Robert Morris, and Trevor Blackwell.^[S25] Y Combinator is a seed accelerator that provides funding, mentorship, and resources to early-stage startups. It has funded companies such as Airbnb, Stripe, Dropbox, Reddit, Coinbase, and DoorDash, among thousands of others.^[S34] The accelerator’s model—small uniform checks, a three-month program, and a culminating demo day—has remained largely unchanged since its inception.^[S25]

Graham stepped back from active day-to-day involvement at Y Combinator in 2014, transitioning leadership to Sam Altman while focusing more on writing and programming language design.^[S26]

Programming language contributions

Graham is a proponent of the Lisp programming language and has designed two Lisp dialects: Arc and Bel.^[S39] Arc, which powers Hacker News, was created to support exploratory programming and rapid iteration.^[S39] Bel is a formally specified, minimalist Lisp designed as a conceptual exploration of language design.^[S39]

Graham has argued that many modern programming language features originated in Lisp decades earlier, including macros, first-class functions, and REPL-driven development.^[S21] He has also advocated for learning Lisp as a way to improve programming skills in any language, emphasizing its influence on problem-solving and abstraction.^[S6]

Writing and essays

Graham is a prolific essayist whose writing spans topics such as startups, programming, work, and life. His essays are widely read and have influenced entrepreneurs, engineers, and investors.^[S3] He publishes new essays irregularly, stating that he writes only when an idea is genuinely new and continues editing pieces for months before publishing.^[S3]

Among his most influential essays are:

• How to Start a Startup (2005), which outlines foundational principles for launching a startup;^[S28]
• Do Things That Don't Scale (2013), a guide for early-stage founders to focus on manual, user-centric growth;^[S11]
• Default Alive vs Default Dead (2015), a framework for evaluating startup financial health;^[S13]
• How to Do Great Work (2023), a comprehensive reflection on the conditions that lead to exceptional achievement;^[S35]
• Founder Mode (2024), which argues that founders should remain deeply involved in company operations beyond conventional delegation.^[S36]

Graham’s essays are frequently cited in startup and technical communities and are recommended as entry points for new readers.^[S28]

Hacker News

Graham created Hacker News, a social news and discussion platform focused on technology, startups, and science.^[S37] Built using Arc, Hacker News has operated since 2007 with minimal architectural changes and is known for its high signal-to-noise ratio, attributed to human moderation and community norms.^[S30]

The site remains one of the most influential online communities for programmers and entrepreneurs, serving as a platform for sharing links, discussing technology, and fostering debate.^[S37]

Public profile and online presence

Graham maintains a personal website, paulgraham.com, which hosts his essays, technical writing, and project documentation.^[S40] The site also includes links to his essays, programming projects, and public statements.^[S4]

He is active on Twitter (X), where he shares commentary on technology, startups, and culture.^[S41] His public links include:

• Essays
• Y Combinator
• Hacker News
• How to Do Great Work
• Founder Mode
• Arc

His writing and projects are frequently referenced in discussions about startup culture, programming methodology, and technical leadership.^[S3]

Notable projects

Graham has led or co-created several notable projects:

• Viaweb (1995–1998): An online store builder written in Common Lisp, later acquired by Yahoo! and rebranded as Yahoo! Store.^[S24]
• Y Combinator (2005–present): A seed accelerator that has funded thousands of startups, including Airbnb, Stripe, Dropbox, Reddit, and Coinbase.^[S34]
• Hacker News (2007–present): A social news platform for the technology and startup community, built with Arc.^[S37]
• Arc and Bel: Lisp dialects designed for exploratory programming and language experimentation.^[S39]
• How to Do Great Work (2023): A long-form essay on achieving excellence in any field.^[S35]
• Founder Mode (2024): An essay and concept advocating deeper founder involvement in company operations.^[S36]

Views and philosophy

Graham’s philosophy emphasizes practicality, resourcefulness, and user-centric design. He advocates for doing things that don’t scale in early-stage startups, arguing that manual effort and close customer interaction are critical to building products people want.^[S11] He is known for his emphasis on relentless resourcefulness as a defining trait of successful founders.^[S19]

He has also written extensively on programming, arguing that Lisp’s influence persists in modern languages and that learning Lisp can improve programming intuition.^[S21] His views on artificial intelligence and large language models focus on their role as productivity tools rather than replacements for human judgment.^[S7]

In essays such as Life is Short and Mind the Gap, Graham reflects on personal productivity, wealth creation, and societal priorities, advocating for focus and intrinsic motivation over conventional metrics of success.^{[S22, S31]}

Personal life

Graham is married to Jessica Livingston, a co-founder of Y Combinator and author of Founders at Work.^[S23] He splits his time between Cambridge, Massachusetts, and Cambridge, England.^[S23]

The public profile does not provide details about hobbies, family beyond his marriage, or other personal interests beyond his professional and intellectual pursuits.^[S23]

Legacy and influence

Graham’s contributions to programming, startup culture, and technical writing have had a lasting impact on the technology industry. Y Combinator has become a model for startup accelerators worldwide, and his essays are widely cited in discussions about entrepreneurship and software development.^[S34] His advocacy for Lisp and exploratory programming has influenced a generation of programmers, and Hacker News remains a central hub for technical discourse.^[S37]

While Graham has stepped back from active operational roles, his writing and ideas continue to shape debates about technology, work, and innovation.^[S8]