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“He who wishes to be rich in a day will be hanged in a year.”
— Leonardo da Vinci Primary source“Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments.”
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“A fundamental rule in technology says that whatever can be done will be done.”
— Andrew S. Grove Primary source“The reward of a thing well done, is to have done it.”
— Ralph Waldo Emerson Primary source“There is no little enemy.”
— Benjamin Franklin Primary source“You may delay, but time will not.”
— Benjamin Franklin Primary source