Upon the great questions of origin, of destiny, of immortality, of . . . other worlds, every honest man must say, 'I do not know.' Upon these questions, this is the creed of intelligence.
Robert Green IngersollAs long as every question is answered by the word "God," scientific inquiry is simply impossible.
Robert Green IngersollI would have all the professors in colleges, all the teachers in schools of every kind, including those in Sunday schools, agree that they would teach only what they know, that they would not palm off guesses as demonstrated truths.
Robert Green Ingersoll