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 (which prefers, e.g. https://en.wikipedia.org/wiki/Francis_Schaeffer