“The greatest deception men suffer is from their own opinions.”
Leonardo da Vinci
The Notebooks of Leonardo Da Vinci (Primary source)
The Notebooks of Leonardo da Vinci, translated by Jean Paul Richter, is a thematic anthology of Leonardo’s writings on art, science, anatomy, engineering, and philosophy—revealing the genius’s insights, observations, and inventions through his own reflective and analytical prose.
More about “The Notebooks of Leonardo Da Vinci” →
“A man is worthy of praise or blame solely on account of those actions which lie within his power to do or not to do.”
— Leonardo da Vinci Primary source“Wisdom is the daughter of experience.”
— Leonardo da Vinci Primary source“He who does not punish evil commands it to be done.”
— Leonardo da Vinci Primary source“Any one who in discussion relies upon authority uses, not his understanding, but rather his memory.”
— Leonardo da Vinci Primary sourceMore quotes by Leonardo da Vinci →
“Observe all men; thyself most.”
— Benjamin Franklin Primary source“Do not do that which you would not have known.”
— Benjamin Franklin Primary source“Like all harsh, cold men, he was easily tipped over into sentiment.”
— Ian Fleming Primary source“Men who hesitate never succeed in their undertakings.”
— Napoleon Bonaparte Disputed