Criticism - Churchill

Criticism may not be agreeable, but it is necessary. 
It fulfils the same function as pain in the human body. It calls attention to an unhealthy state of things. 

quote by Winson Churchill

The critic and the artist

The critic has to educate the public;
the artist has to educate the critic…

Quote by Oscar Wilde

Native American wisdom

Never criticize a man until you've walked a mile in his moccasins.

Native American Proverb

Critisism

If you are not criticized, you may not be doing much.

Donald Rumsfeld