An overflow of good converts to bad.

We go to gain a little patch of ground that hath in it no profit but the name.

Well, in that hit you miss. She'll not be hit With Cupid's arrow. She hath Dian's wit, And, in strong proff of chastity well armed, From Love's weak childish bow she lives uncharmed. She will not stay the siege of loving terms, Nor bide th' encounter of assailing eyes, Nor ope her lap to saint-seducing gold. O, she is rich in beauty; only poor That, when she dies, with dies her store. Act 1,Scene 1, lines 180-197

In brief, sir, study what you most affect.

The pow'r that I have on you is to spare you; The malice towards you to forgive you.

Have more than you show, Speak less than you know.

Downy sleep, death's counterfeit.