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.

The Works of Mr. William Shakespear;: In Six Volumes. Adorn'd with Cuts (ed. 1709)