Reason is the light, the sun of the brain. It is the compass of the mind, the ever-constant Northern Star, the mountain peak that lifts itself above all clouds.
Robert Green IngersollThe man who invented the telescope found out more about heaven than the closed eyes of prayer ever discovered.
Robert Green IngersollMy principal objections to orthodox religion are two: slavery here and hell hereafter.
Robert Green IngersollI am simply in favor of intellectual hospitality-that is all. You come to me with a new idea. I invite you into the house. Let us see what you have. Let us talk it over. If I do not like your thought, I will bid it a polite "good day." If I do like it, I will say: "Sit down; stay with me, and become a part of the intellectual wealth of my world."
Robert Green Ingersoll