Lawrence Mark "Larry" Sanger (born July 16, 1968) is an American former philosophy lecturer/assistant professor, co-founder of Wikipedia, and the founder of Citizendium. He grew up in Anchorage, Alaska. From an early age he has been interested in philosophy. Sanger received a Bachelor of Arts in philosophy from Reed College in 1991 and a Doctor of Philosophy in philosophy from Ohio State University in 2000. Most of his philosophical work has focused on epistemology, the theory of knowledge.