Self-love (n.) wounded by neglect can carry a wit's vengeance for twenty years.
Self-love (n.) is an instrument useful but dangerous; it often wounds the band which makes use of it, and seldom does good without doing barm.
Self-love (n.) is the only natural passion, good in itself; it becomes good or bad only by the use made of it and the relations established through it.
Self-love (n.) is the root and spring of all passions, the only one born with man and the only one that never leaves him; all the others are its modifications.
Self-love (n.) in men of letters is so irritable that a compliment left the least bit equivocal becomes a mortal offense: Rousseau's 'not for the author of the Mercure, but for M. Marmontel' made an enemy for life.