"If the glove doesn't fit you must acquit" Johnny Cochran from the OJ trial.

An ancient one: «Amor, ch'al cor gentil ratto s'apprende / prese costui della bella persona / che mi fu tolta, e 'l modo ancor m'offende. / Amor, ch'a nullo amato amar perdona / mi prese del costui piacer sì forte / che, come vedi, ancor non m'abbandona. / Amor condusse noi ad una morte.» (Dante Alighieri, "Commedia" - Inferno V) «Love, that quickly gets any gentle heart, made him fall in love with my beautiful body, which was taken away from me, so that I still suffer. Love, that never let any loved one to save on loving back, made me fall in love with him so strongly that, as you see, I'm still with him. Love brought us two to one death.» (chapter 5th from "Comedy"'s Hell part; a damned lover woman's soul is talking to the poet visiting Hell; her lover is beside her. That's one of the most beautiful piece of love poetry we have, I'm sorry for my poor translation.) A modern one: «Se vogliamo che tutto rimanga com'è, bisogna che tutto cambi.» (Giuseppe Tomasi di Lampedusa, "Il Gattopardo") «If we want everything to stay as it is, we need everything to change.» (from a great historical novel set in the time Italy were unified and aristocracy had to face a new country...)