Source: Aphorisms and Reflections (1901), p. 76
Source: Aphorisms and Reflections (1901), p. 114
Letter to his mother, written from the University of Pennsylvania (12 February 1904), published in The Selected Letters of William Carlos Williams (1957) edited by John C. Thirlwall, p. 5
General sources
Source: The Happiness Project: Or Why I Spent a Year Trying to Sing in the Morning, Clean My Closets, Fight Right, Read Aristotle, and Generally Have More Fun
“Whoever is happy will make others happy.”
Source: The Diary of a Young Girl
De visione Dei (On The Vision of God) (1453)
“Be true to thyself, as thou be not false to others.”
Of Wisdom for a Man's Self
Essays (1625)
“1887. Think thyself happy if thou hast one true Friend; never think of finding another.”
Introductio ad prudentiam: Part II (1727)
Reported in Josiah Hotchkiss Gilbert, Dictionary of Burning Words of Brilliant Writers (1895), p. 270.
