A man says what he knows, a woman says what will please; the one needs knowledge, the other taste; utility… — Jean Jacques Rousseau

A man says what he knows, a woman says what will please; the one needs knowledge, the other taste; utility should be the man's object; the woman speaks to give pleasure. There should be nothing in common but truth. You should not check a girl's prattle like a boy's by the harsh question, "What is the use of that?" but by another question at least as difficult to answer, "What effect will that have?"

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