François de La Rochefoucauld, Reflections; or Sentences and Moral Maxims (1665)
“ If however the same female becomes favourable to us, or certain of our interests reconcile her to us, our sole self interest gives her back the lustre which our hatred deprived her of. The bad qualities become effaced, the good ones appear with a redoubled advantage; we even summon all our indulgence to justify the war she has made upon us. Now although all passions prove this truth, that of love exhibits it most clearly; for we may see a lover moved with rage by the neglect or the infidelity of her whom he loves, and meditating the utmost vengeance that his passion can inspire. ”

