Abraham Maslow
"A musician must make music, an artist must paint, a poet must write if he is to be ultimately at peace with himself. What one can be, one must be. "
"If the only tool you have is a hammer, you tend to see every problem as a nail. "
"Only the flexibly creative person can really manage the future, Only the one who can face novelty with confidence and without fear. "
"To the man who only has a hammer in the toolkit, every problem looks like a nail. "
"We are not in a position in which we have nothing to work with. We already have capacities, talents, direction, missions, callings. "