The combined wisdom and genius of all mankind cannot possibly conceive of an argument against liberty of thought.

No man of sense in the whole world believes in devils any more than he does in mermaids, vampires, gorgons, hydras, naiads, dryads, nymphs, fairies, the Fountain of Youth, [or] the Philosopher's Stone. . . .

Arguments cannot be answered by personal abuse; there is no logic in slander, and falsehood, in the long run, defeats itself.

It seems to me that if there is some infinite being who wants us to think alike he would have made us alike.

If God objected to [people with various handicaps], he ought not have created such people.

In making up my mind as to what Mr. Lincoln really believed, I do not take into consideration the evidence of unnamed persons or the contents of anonymous letters; I take the testimony of those who knew and loved him, of those to whom he opened his heart and to whom he spoke in the freedom of perfect confidence.

With their backs to the sunrise they worship the night.