“Chorus of Furies: We claim to be just and upright. No wrath from us will come stealthily to the one who holds out clean hands, and he will go through life unharmed; but whoever sins, as this man has, and hides his blood-stained hands, as avengers of bloodshed we appear against him to the end, presenting ourselves as upright witnesses for the dead.”

Letter to Mr. J.C. Martin concerning religion and politics (6 November 1908)
1900s
Context: To discriminate against a thoroughly upright citizen because he belongs to some particular church, or because, like Abraham Lincoln, he has not avowed his allegiance to any church, is an outrage against that liberty of conscience which is one of the foundations of American life. You are entitled to know whether a man seeking your suffrages is a man of clean and upright life, honorable in all of his dealings with his fellows, and fit by qualification and purpose to do well in the great office for which he is a candidate; but you are not entitled to know matters which lie purely between himself and his Maker. If it is proper or legitimate to oppose a man for being a Unitarian, as was John Quincy Adams, for instance, as is the Rev. Edward Everett Hale, at the present moment Chaplain of the Senate, and an American of whose life all good Americans are proud then it would be equally proper to support or oppose a man because of his views on justification by faith, or the method of administering the sacrament, or the gospel of salvation by works. If you once enter on such a career there is absolutely no limit at which you can legitimately stop.

"Bill Nye Debates Ken Ham" (February 4, 2014)

The Gun Seller (1996)

Source: It's Not About the Bike: My Journey Back to Life

1880s, Speech Nominating John Sherman for President (1880)

Book II, X
Napoleon the Little (1852)

"Affluence and Ennui in Our Society" in For the Love of Life (1986) translated by Robert and Rita Kimber
Context: What is it that distinguishes man from animals? It is not his upright posture. That was present in the apes long before the brain began to develop. Nor is it the use of tools. It is something altogether new, a previously unknown quality: self-awareness. Animals, too, have awareness. They are aware of objects; they know this is one thing and that another. But when the human being as such was born he had a new and different consciousness, a consciousness of himself; he knew that he existed and that he was something different, something apart from nature, apart from other people, too. He experienced himself. He was aware that he thought and felt. As far as we know, there is nothing analogous to this anywhere in the animal kingdom. That is the specific quality that makes human beings human.

All the ride to the hospital I kept bending over him, saying "Jack, Jack, can you hear me, I love you, Jack."
The "Camelot" interview (29 November 1963)

III, 5
Meditations (c. 121–180 AD), Book III