“Threats alone are the weapons of the threatened man.”
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“Reprove your friend in secret and praise him openly.”
— Leonardo da Vinci Primary source“Necessity is the mistress and guide of nature.”
— Leonardo da Vinci Primary sourceMore quotes by Leonardo da Vinci →
“Let him think I am more man than I am and I will be so.”
— Ernest Hemingway Primary source“But man is not made for defeat. A man can be destroyed but not defeated.”
— Ernest Hemingway Primary source“No man ever was glorious who was not laborious.”
— Benjamin Franklin Primary source“The imagination of nature is far, far greater than the imagination of man.”
— Richard Feynman Primary source