On her portrayal of Theseus in her books, in her "Author's Note", p. 333
The King Must Die (1958)
Context: Men who hover over their opponents have no cause to evolve a science of wrestling; and Theseus is conventionally shown in combat with hulking of monstrous enemies, living by his wits. The tradition that he emulated the feats of Herakles may well embalm some ancient sneer at the over-compensation of a small assertive man. Napoleon comes to mind.
If one examines the legend in this light, a well-defined personality emerges. It is that of a light-weight; brave and aggressive, physically tough and quick; highly sexed and rather promiscuous; touchily proud, but with a feeling for the underdog; resembling Alexander in his precocious competence, gift of leadership, and romantic sense of destiny.
“The world is divided into men who have wit and no religion and men who have religion and no wit.”
This was declared without citation to have been attributed to Avicenna in A Rationalist Encyclopaedia : A Book of Reference on Religion, Philosophy, Ethics, and Science (1950), by Joseph McCabe, p. 43; it was also later wrongly attributed to Averroes in The Atheist World (1991) by Madalyn Murray O'Hair, p. 46. It actually originates as a statement by the atheist Al-Maʿarri, earlier translated into English in A Short History of Freethought Ancient and Modern (1906) by John Mackinnon Robertson, Vol. I, Ch. VIII : Freethought under Islam, p. 269, in the form: "The world holds two classes of men ; intelligent men without religion, and religious men without intelligence."
Misattributed
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Avicenna 8
medieval Persian polymath, physician, and philosopher 980–1037Related quotes

“All religions have been made by men.”

“Men are contented to be laughed at for their wit, but not for their folly.”
Thoughts on Various Subjects from Miscellanies (1711-1726)

Paradoxe sur le Comédien (1773-1777)

Source: The Bell Jar (1963), Ch. 7
Context: Instead of the world being divided up into Catholics and Protestants or Republicans and Democrats or white men and black men or even men and women, I saw the world divided into people who had slept with somebody and people who hadn't, and this seemed the only really significant difference between one person and another. I thought a spectacular change would come over me the day I crossed the boundary line.

The Plan of Delano (1965)

"Thinking for Oneself" http://ebooks.adelaide.edu.au/s/schopenhauer/arthur/essays/chapter8.html
Essays

“[A proverb is] one man's wit, and all men's wisdom.”
Remark to James Mackintosh on October 6, 1830, reported in his posthumous memoir, Memoirs of the Life of the Right Honourable Sir James Mackintosh, Vol. 2 (1836), p. 472 http://books.google.com/books?id=wHM4AAAAYAAJ&q=%22one+man's+wit+and+all+men's+wisdom%22&pg=PA472#v=onepage
Variant: [A proverb is] the wisdom of many and the wit of one.

“I see that sensible men and conscientious men all over the world were of one religion.”
Lectures and Biographical Sketches, The Preacher
Bartlett's Familiar Quotations, 10th ed. (1919)