Forget the dead, the past? O yet there are ghosts that may take revenge for it, memories that make the heart a tomb, regrets which gild thro' the spirit's gloom, and with ghastly whispers tell that joy, once lost, is pain. Percy Bysshe Shelley
Men should be either treated generously or destroyed, because they take revenge for slight injuries - for heavy ones they cannot. Niccolò Machiavelli