Francis August Schaeffer (January 30, 1912 – May 15, 1984) was an American evangelical theologian, philosopher, and Presbyterian pastor. He co-founded the L'Abri community in Switzerland with his wife Edith Schaeffer, née Seville, a prolific author in her own right. Opposed to theological modernism, Schaeffer promoted what he claimed was a more historic Protestant faith and a presuppositional approach to Christian apologetics, which he believed would answer the questions of the age. Schaeffer was the father of the author, film-maker, and painter Frank Schaeffer.