“I know there is strength in the differences between us,
And I know there is comfort where we overlap.”

Source: Lucy Sullivan Is Getting Married

"The Making of a Scientist," p. 14 <!-- Feynman used variants of this bird story repeatedly: (1) "What is Science?", presented at the fifteenth annual meeting of the National Science Teachers Association, in New York City (1966) published in The Physics Teacher, volume 7, issue 6 (1969), p. 313-320. (2) Interview for the BBC TV Horizon program "The Pleasure of Finding Things Out" (1981), published in Christopher Sykes, No Ordinary Genius: The Illustrated Richard Feynman (1994), p. 27. -->
What Do You Care What Other People Think? (1988)
Context: You can know the name of that bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird. You'll only know about humans in different places, and what they call the bird. … I learned very early the difference between knowing the name of something and knowing something.

Source: Sloppy Firsts

The Late Forties and the Fifties, 1956 entry.
The Journals of John Cheever (1991)

Source: The Meaning of God in Human Experience (1912), Ch. XVI : The Original Sources of the Knowledge of God, p. 235.

Widely known as The Serenity Prayer this has often been attributed to St. Francis, but earliest known forms of it appeared in the early 20th century, and it is generally credited to Reinhold Niebuhr.
Misattributed

Managing Knowledge Means Managing Oneself Leader to Leader, No. 16 (Spring 2000)
1990s and later

Source: All-American Girl

Letter to Hugo Boxel (October 1674) The Chief Works of Benedict de Spinoza (1891) Tr. R. H. M. Elwes, Vol. 2, Letter 58 (54).