Giacomo Casanova said this quote

What do you want to say to me?’‘Nothing—just to talk about the profession I am entering. I am about to practice virtue in order to find a man who loves it only to destroy it' [replied Mademoiselle Vesian.]‘That is it exactly; and believe me, everything in this life is much the same. We refer everything to ourselves, and each of us is a tyrant. That is why the best of mortals is he who is tolerant.