"A mind that is full cannot take in anything new, like a cup that is full of opinions and preconceptions. Wisdom and happiness are to be found only by emptying one's cup."
Mark Epstein (from "Going to Pieces Without Falling Apart")
“For having lived long, I have experienced many instances of being obliged, by better information or fuller consideration, to change opinions, even on important subjects, which I once thought right but found to be otherwise.”
"Opinions are what we hold onto when we don't know the truth."