“The soul of any civilization on earth has ever been and still is Art and Religion, but neither has ever been found in commerce, in government of the police.”

Federalist No. 51 (6 February 1788)
1780s, Federalist Papers (1787–1788)

Solitude of Self (1892)

Source: War and peace (2005), p. 1

On the Mindless Menace of Violence (1968)
Context: What has violence ever accomplished? What has it ever created? No martyr's cause has ever been stilled by an assassin's bullet. No wrongs have ever been righted by riots and civil disorders. A sniper is only a coward, not a hero; and an uncontrolled, uncontrollable mob is only the voice of madness, not the voice of reason. Whenever any American's life is taken by another American unnecessarily — whether it is done in the name of the law or in the defiance of the law, by one man or a gang, in cold blood or in passion, in an attack of violence or in response to violence — whenever we tear at the fabric of the life which another man has painfully and clumsily woven for himself and his children, the whole nation is degraded.

Founding Address (1876), Life and Destiny (1913)
Context: The ethical element of religion has ever been its truly vital and quickening force. It is this which lends such majesty to the speeches of the Prophets, which gives such ineffable power and sweetness to the words of Jesus. Has this ethical element become less important in our age? Has the need of accentuating it become less imperative?
To-day, in the estimation of many, science and art are taking the place of religion. But science and art alike are inadequate to build up character and to furnish binding rules of conduct.
We need also a clearer understanding of applied ethics, a better insight into the specific duties of life, a finer and a surer moral tact.

The God-Seeker (1949)
Context: He fretted that he did not know anything. He sighed, 'I have sought the Kingdom of God a little, the Squire has sought it terribly, but we haven't even a map, and after what I saw this afternoon, I know the Sioux are as barbarous as we are. Is it possible that nobody has ever known—that there never has been a completely civilized man, and won't be for another thousand years? ~ Ch. 33

Nature's Eternal Religion (1973), Ch. 2, Paragraph 2
Nature's Eternal Religion (1973)

A Testament (1957)

Did Eve really have an Extra Rib?: And other tough questions about the Bible (2002)