"Avoid the precepts of those thinkers whose..." - Quote by Leonardo Da Vinci

“Nothing is so much to be feared as Evil Report.”

“Medicine is the restoration of discordant elements.”

“...The world wouldn't be the world, without trouble.”

“Who is old enough to have learned from experience?”

“All genuine knowledge originates in direct experience.”

“Even when one sits in the prisoner's dock, it is interesting to hear talk about oneself.”

“If NATURE has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea... No one possesses the less, because every other possess the whole of it. He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me.”

“Man carries the world in his head, the whole astronomy and chemistry suspended in a thought. Because the history of nature is charactered in his brain, therefore he is the prophet and discoverer of her secrets. Every known fact in natural science was divined by the presentiment of somebody, before it was actually verified.”

“What does reason know? Reason only knows what it has succeeded in learning.”