It is not enough to know things; one must use them. - Leonardo da Vinci

"It is not enough to know things; one must use them."

Leonardo da Vinci

Polymath Artist Scientist Italian 1452–1519

More from Leonardo da Vinci

"Learning never exhausts the mind."

"Simplicity is the ultimate sophistication."

"The observer sees what he observes."

"Art is the queen of all sciences."