Anyone who conducts an argument by appealing to authority is... - Leonardo da Vinci

"Anyone who conducts an argument by appealing to authority is not using intelligence; he is just using memory."

Leonardo da Vinci Knowledge

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."

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."