1851  We are in the habit of exaggerating or imagining or anticipating sorrow. We are torn by things present or about things yet to come. Consider whether your proofs of future troubles are sure. For it is more often the case that we are troubled by our apprehensions.
1825  “Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.”
1254  I am sure the grapes are sour.
613  Your most unhappy customers are your greatest source of learning
803  Pleasure and action make the hours seem short.