Who said "The best teachers are often our mistakes."?

This quote is attributed to William Riker.

The best teachers are often our mistakes. - William Riker

"The best teachers are often our mistakes."

William Riker Education

"Make it so."

"I'm a man of action. Words come later."

"You can't spend your whole life waiting for things to happen."

"The line between improvisation and disaster is a very fine one."

"Education opens doors."

"Education opens doors to endless possibilities."

"I ain't got the education you got, bub."

"You can't put a price on history."