Hath Romeo slain himself? Say thou but ay, And that bare vowel ay shall poison more Than the death-darting eye of cockatrice. I am not I,if there be such an ay, Or those eyes shut,that make thee answer ay: If he be slain say ay,or if not,no: Brief sounds,determine of my weal or woe.
William Shakespeare, Samuel Johnson, George Steevens (1773). “Romeo and Juliet. Hamlet. Othello. Appendixes”, p.82