Francis Schaeffer (January 30, 1912 – May 15, 1984) was an American evangelical theologian, apologist, and writer, best known for founding L'Abri, a Christian community in Switzerland. Born in Pennsylvania, he initially embraced fundamentalism but later engaged with broader cultural issues. Schaeffer emphasized the integration of Christian worldview with philosophy, art, and society, critiquing modern secularism. His works, such as 'Escape from Reason' and 'The God Who Is There,' address spiritual crises of modern individuals. Through L'Abri, he influenced countless intellectuals and seekers. Schaeffer's legacy endures in evangelical cultural criticism and apologetics.