“I may live for thirty years, or perhaps forty, or maybe just one day: therefore I have resolved to use this day, or whatever I have to say in these thirty years or whatever I have to say this one day I may have to live — I have resolved to use it in such a way that if not one day in my whole past life has been used well, this one by the help of God will be. JP VIII 1 A 533”

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.

Barry Edward O'Meara, in Napoleon in Exile : or, A Voice from St. Helena (1822), Vol. II, p. 155
About
Context: "What do you think," said he, "of all things in the world would give me the greatest pleasure?" I was on the point of replying, removal from St. Helena, when he said, "To be able to go about incognito in London and other parts of England, to the restaurateurs, with a friend, to dine in public at the expense of half a guinea or a guinea, and listen to the conversation of the company; to go through them all, changing almost daily, and in this manner, with my own ears, to hear the people express their sentiments, in their unguarded moments, freely and without restraint; to hear their real opinion of myself, and of the surprising occurrences of the last twenty years." I observed, that he would hear much evil and much good of himself. "Oh, as to the evil," replied he, "I care not about that. I am well used to it. Besides, I know that the public opinion will be changed. The nation will be just as much disgusted at the libels published against me, as they formerly were greedy in reading and believing them. This," added he, "and the education of my son, would form my greatest pleasure. It was my intention to have done this, had I reached America. The happiest days of my life were from sixteen to twenty, during the semestres, when I used to go about, as I have told you I should wish to do, from one restaurateur to another, living moderately, and having a lodging for which I paid three louis a month. They were the happiest days of my life. I was always so much occupied, that I may say I never was truly happy upon the throne."

Source: Life As We Knew It

Source: 1930 - 1941, from 'Arshile Gorky, – Goats on the roof' (2009), p. 125: Gorky's quote, in a letter to his sister Vartush Mooradian, 28 February 1938

Source: The Lover's Dictionary

1870s, Speech before the Pole-Bearers Association (1875)

Marmee March to Jo, in Ch. 8 : Jo Meets Apollyon
Little Women (1868)
Context: You think your temper is the worst in the world, but mine used to be just like it. … I've been trying to cure it for forty years, and have only succeeded in controlling it. I am angry nearly every day of my life, but I have learned not to show it; and I still try to hope not to feel it, though it may take me another forty years to do it. … I've learned to check the hasty words that rise to my lips, and when I feel that they mean to break out against my will, I just go away for a minute, and give myself a little shake for being so weak and wicked.