“Have an open mind! Have an empty cup!”
“You should never look at the cup or glass as being half empty; see it as being half empty, then you will have mastered the test of greatness.”
“The purpose of education is to replace an empty mind with an open one.”
“Travel's greatest purpose is to replace an empty mind with an open one.”
“Music is the cup that holds the wine of silence. Sound is that cup, but empty. Noise is that cup, but broken.”
“Merely having an open mind is nothing. The object of opening the mind, as of opening the mouth, is to shut it again on something solid.”