A man should study a woman very carefully before he allows her to see his thoughts and emotions as they arise in him. A woman, whose nature is large as her heart is tender, can smile upon childishness, and make allowances; but let her have ever so small a spice of vanity herself, and she cannot forgive childishness, or littleness, or vanity in her lover.
 Honoré de Balzac, Lost Illusions (1843). copy citation

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Author Honoré de Balzac
Source Lost Illusions
Topic childishness littleness
Date 1843
Language English
Reference
Note Translated by Ellen Marriage
Weblink https://www.gutenberg.org/cache/epub/13159/pg13159.html

Context

“Like other men who combine great intellectual powers with the charming simplicity of childhood, he openly expressed his surprise at the new and wonderful things which he saw, and thereby made a mistake. A man should study a woman very carefully before he allows her to see his thoughts and emotions as they arise in him. A woman, whose nature is large as her heart is tender, can smile upon childishness, and make allowances; but let her have ever so small a spice of vanity herself, and she cannot forgive childishness, or littleness, or vanity in her lover. Many a woman is so extravagant a worshiper that she must always see the god in her idol; but there are yet others who love a man for his sake and not for their own, and adore his failings with his greater qualities.” source