“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.
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“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“Study without desire spoils the memory, and it retains nothing that it takes in.”
— Leonardo da Vinci Primary source“It is easier to resist at the beginning than at the end.”
— Leonardo da Vinci Primary sourceMore quotes by Leonardo da Vinci →
“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“Altogether too often, people substitute opinions for facts and emotions for analysis.”
— Andrew S. Grove Primary source“Your most unhappy customers are your greatest source of learning.”
— Bill Gates Primary source