“Twas the saying of [Georgias Leontinus apud Arist. Rhetor. lib. 3. cap. 18… which the Translator renders, Seria Risu, Risum Seriis discutere] an ancient sage that humour was the only test of gravity, and gravity of humour. For a subject which would not bear raillery was suspicious; and a jest which would not bear a serious examination was certainly false wit.”

Wit, Humor, and Shakespeare: Twelve essays (1876), p. 63.

"Wit and Humour", p. 430
A History of Chinese Literature (1901)

"A Defence of Baby-Worship"
The Defendant (1901)
Context: The most unfathomable schools and sages have never attained to the gravity which dwells in the eyes of a baby of three months old. It is the gravity of astonishment at the universe, and astonishment at the universe is not mysticism, but a transcendent common-sense. The fascination of children lies in this: that with each of them all things are remade, and the universe is put again upon its trial. As we walk the streets and see below us those delightful bulbous heads, three times too big for the body, which mark these human mushrooms, we ought always primarily to remember that within every one of these heads there is a new universe, as new as it was on the seventh day of creation. In each of those orbs there is a new system of stars, new grass, new cities, a new sea.

Vol. 1, p. 38; "Sensus Communis".
Characteristicks of Men, Manners, Opinions, Times (1711)

Source: The Moon and Sixpence (1919), Ch. 44, p. 157

Said in 1821, as quoted in Letters and Conversations of S.T. Coleridge (1836) by Thomas Allsop

Ham and Tongue.
One-Half of Robertson Davies (1977)
Context: I have never consciously "used" humour in my life. Such humour as I may have is one of the elements in which I live. I cannot recall a time when I was not conscious of the deep, heaving, rolling ocean of hilarity that lies so very near the surface of life in most of its aspects. If I am a moralist — and I suppose I am — I am certainly not a gloomy moralist, and if humour finds its way into my work it is because I cannot help it.

Song lyrics, Blood on the Tracks (1975), Idiot Wind

Letter to Thomas Jefferson (23 January 1825), published in Letters: The Complete Correspondence Between Thomas Jefferson and Abigail and John Adams (UNC Press, 1988), p. 607
1820s
Context: We think ourselves possessed, or, at least, we boast that we are so, of liberty of conscience on all subjects, and of the right of free inquiry and private judgment in all cases, and yet how far are we from these exalted privileges in fact! There exists, I believe, throughout the whole Christian world, a law which makes it blasphemy to deny or doubt the divine inspiration of all the books of the Old and New Testaments, from Genesis to Revelations. In most countries of Europe it is punished by fire at the stake, or the rack, or the wheel. In England itself it is punished by boring through the tongue with a poker. In America it is not better; even in our own Massachusetts, which I believe, upon the whole, is as temperate and moderate in religious zeal as most of the States, a law was made in the latter end of the last century, repealing the cruel punishments of the former laws, but substituting fine and imprisonment upon all those blasphemers upon any book of the Old Testament or New. Now, what free inquiry, when a writer must surely encounter the risk of fine or imprisonment for adducing any argument for investigating into the divine authority of those books? Who would run the risk of translating Dupuis? But I cannot enlarge upon this subject, though I have it much at heart. I think such laws a great embarrassment, great obstructions to the improvement of the human mind. Books that cannot bear examination, certainly ought not to be established as divine inspiration by penal laws. It is true, few persons appear desirous to put such laws in execution, and it is also true that some few persons are hardy enough to venture to depart from them. But as long as they continue in force as laws, the human mind must make an awkward and clumsy progress in its investigations. I wish they were repealed. The substance and essence of Christianity, as I understand it, is eternal and unchangeable, and will bear examination forever, but it has been mixed with extraneous ingredients, which I think will not bear examination, and they ought to be separated.