Happiness is beneficial for the body but it is grief that develops the powers of the mind. - Marcel Proust, The Past Recaptured, Remembrance of Things Past

Your most unhappy customers are your greatest source of learning. - Bill Gates, Business @ the Speed of Thought

The art of living lies less in eliminating our troubles than in growing with them. - Bernard M. Baruch

Like a plant that starts up in showers and sunshine and does not know which has best helped it to grow, it is difficult to say whether the hard things or the pleasant things did me the most good. - Lucy Larcom

If all misfortunes were laid in one common heap whence everyone must take an equal portion, most people would be contented to take their own and depart. - Socrates

Men grow tired of sleep, love, singing and dancing sooner than of war. - Homer, Iliad

There's nothing that cleanses your soul like getting the hell kicked out of you. - Woody Hayes

It is foolish to tear one's hair in grief, as though sorrow would be made less by baldness. - Cicero

Failure is the condiment that gives success its flavor. - Truman Capote