“Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments.”
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“He who thinks little, errs much.”
— Leonardo da Vinci Primary sourceMore quotes by Leonardo da Vinci →
“God helps them that help themselves.”
— Benjamin Franklin Primary source“Nature is full of infinite causes that have never occured in experience.”
— Leonardo da Vinci Primary source“Learning never exhausts the mind.”
— Leonardo da Vinci Disputed“Never buy a what you do not want, because it is cheap; it will be dear to you.”
— Thomas Jefferson Primary sourceExperience Judgement Cause and Effect Science