I learned you can't trust the judgment of good friends. — Carl Sandburg

In every tyrant's heart there springs in the end this poison, that he cannot trust a friend. — Aeschylus
Trust not yourself, but your defects to know, make use of every friend and every foe. — Alexander Pope
Age appears to be best in four things; old wood best to burn, old wine to drink, old friends to trust, and old authors to read. — Francis Bacon
To work hard, to live hard, to die hard, and then go to hell after all would be too damn hard. — Carl Sandburg
Ordering a man to write a poem is like commanding a pregnant woman to give birth to a red-headed child. — Carl Sandburg
Slang is a language that rolls up its sleeves, spits on its hands and goes to work. — Carl Sandburg