In other periods of depression it has always been possible to see some things which were solid and upon which you could base hope, but as I look about, I now see nothing to give ground for hope — nothing of man. But there is still religion, which is the same yesterday, today, and forever. That continues as a solid basis for hope and courage.

Conversation with Charles Andrews (1 January 1933), quoted in Coolidge: An American Enigma (2000).