"I am a believer in what I call "intellectual hospitality." A man comes to your door. If you are a gentleman and he appears to be a good man, you receive him with a smile. You ask after his health. You say: "Take a chair; are you thirsty, are you hungry, will you not break bread with me?" That is what a hospitable, good man does -- he does not set the dog on him. Now, how should we treat a new thought? I say that the brain should be hospitable and say to the new thought: "Come in; sit down; I want to cross-examine you; I want to find whether you are good or bad; if good, stay; if bad, I don't want to hurt you -- probably you think you are all right, -- but your room is better than your company, and I will take another idea in your place."

“After all, of what use is it to search for a creator? The difficulty is not thus solved. You leave your creator as much in need of a creator as anything your creator is supposed to have created. The bottom of your stairs rests on nothing, and the top of your stairs leans upon nothing. You have reached no solution. The word “God” is simply born of our ignorance. We go as far as we can, and we say the rest of the way is “God.” We look as far as we can, and beyond the horizon, where there is nought so far as we know but blindness, we place our Deity. We see an infinitesimal segment of a circle, and we say the rest is “God.”

“I happened to be in the company of six or seven Baptist elders—how I ever got into such bad company, I don’t know,—and one of them asked what I thought about baptism. Well, I never thought much about it; did not know much about it; didn’t want to say anything, but they insisted upon it. I said, “Well, I’ll give you my opinion—with soap, baptism is a good thing.”

“Good-by, gentlemen! I am not asking to be Governor of Illinois … I have in my composition that which I have declared to the world as my views upon religion. My position I would not, under any circumstances, not even for my life, seem to renounce. I would rather refuse to be President of the United States than to do so. My religious belief is my own. It belongs to me, not to the State of Illinois. I would not smother one sentiment of my heart to be the Emperor of the round world.”

“Nothing could tempt me to do this man injustice, though I could hardly add to the injury he has done himself.”

“The hands that help are holier than the lips that pray.”

“Our ancestors in the ages that are gone really believed that by force you could convince a man. You cannot change the conclusion of the brain by force, but I will tell you what you can do by force, and what you have done by force. You can make hypocrites by the million.”