Paul Graham is an English-American computer scientist, writer and essayist, entrepreneur and investor. His work includes the programming language Arc, the startup Viaweb (later renamed Yahoo! Store), co-founding the startup accelerator and seed capital firm Y Combinator, a number of essays and books, and the media webpage Hacker News.
He is the author of the computer programming books On Lisp, ANSI Common Lisp, and Hackers & Painters. Technology journalist Steven Levy has described Graham as a "hacker philosopher".
Graham was born in England, where he and his family have maintained a permanent residence since 2016. He is also a citizen of the United States, where he attended all of his schooling and lived for 48 years prior to returning to England.