"The greatest deception men suffer is from their ow..." - Leonardo da Vinci

“The greatest deception men suffer is from their own opinions.”

Don't let your own opinions deceive you. Stay open-minded.

“Thought without study is vain.”

— Leonardo da Vinci

“Thought without learning is useless.”

— Leonardo da Vinci

“All skills are perfected through practice.”

— Leonardo da Vinci

“Knowledge without action is useless.”

— Leonardo da Vinci