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“Just as iron rusts unless it is used, and water putrifies or, in cold, turns to ice, so our intellect spoils unless it is kept in use.”
— Leonardo da Vinci Primary source“Threats alone are the weapons of the threatened man.”
— Leonardo da Vinci Primary sourceMore quotes by Leonardo da Vinci →
“One today is worth two tomorrows.”
— Benjamin Franklin Primary source“It is better to take many injuries, than to give one.”
— Benjamin Franklin Primary source“For what are we born if not to aid one another?”
— Ernest Hemingway Primary source“Understanding is a two-way street.”
— Eleanor Roosevelt DisputedDiscussion Authority Understanding Memory