“I always want to know the things one shouldn't do."
"So as to do them?" asked her aunt.
"So as to choose." said Isabel”
Source: The Portrait of a Lady
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Henry James 154
American novelist, short story author, and literary critic 1843–1916Related quotes

A defense http://www.thelizlibrary.org/undelete/library/library005.html of Elizabeth Cady Stanton against a motion to repudiate her Woman's Bible at a meeting of the National-American Woman Suffrage Association 1896 Convention, HWS, IV (1902), p. 263
Variant: I distrust those people who know so well what God wants them to do to their fellows, because it always coincides with their own desires.
Context: The one distinct feature of our Association has been the right of the individual opinion for every member. We have been beset at every step with the cry that somebody was injuring the cause by the expression of some sentiments that differed with those held by the majority of mankind. The religious persecution of the ages has been done under what was claimed to be the command of God. I distrust those people who know so well what God wants them to do to their fellows, because it always coincides with their own desires.

"Alboin Errol", in The Lost Road (1987). Compare this with "The lyf so short, the craft so longe to lerne" by Geoffrey Chaucer

Source: All the King's Men' A search for the colonial ideas of some advisers and "accomplices" of Leopold II (1853-1892). (Hannes Vanhauwaert), Preface:The Colonial Ideology of Britain's Leading Superpower http://www.ethesis.net/leopold_II/leopold_II.htm#2.%20 WILLEQUET, J. Le baron Lambermont, 9.