Leonardo da Vinci

“Medicine is the restoration of discordant elements; sickness is the discord of the elements infused into the living body.”

“As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.”

“You can have no dominion greater or less than that over yourself.”

“Intellectual passion drives out sensuality.”

“Water is the driving force of all nature.”

“Knowledge of the past and of the places of the earth is the ornament and food of the mind of man.”

“Nature is the source of all true knowledge. She has her own logic, her own laws, she has no effect without cause nor invention without necessity.”

“The human foot is a masterpiece of engineering and a work of art.”

“Experience does not err. Only your judgments err by expecting from her what is not in her power.”

“Iron rusts from disuse; water loses its purity from stagnation... even so does inaction sap the vigor of the mind.”

“All knowledge which ends in words will die as quickly as it came to life, with the exception of the written word: which is its mechanical part.”

“He who is fixed to a star does not change his mind.”

“The function of muscle is to pull and not to push, except in the case of the genitals and the tongue.”

“The natural desire of good men is knowledge.”

“He who wishes to be rich in a day will be hanged in a year.”

“The noblest pleasure is the joy of understanding.”

“Learning never exhausts the mind.”

“The smallest feline is a masterpiece.”

“Who sows virtue reaps honor.”

“Every action needs to be prompted by a motive.”