The coward threatens when he is safe.

Johann Wolfgang von Goethe

They have vilified me, they have crucified me. Yes, they have even criticized me.

Richard J. Daley

People can be divided into two classes: those who go ahead and do something, and those who sit still and inquire, 'Why wasn't it done the other way?'

Oliver Wendell Holmes

To avoid criticism do nothing, say nothing, be nothing.

Elbert Hubbard