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

Related Quotes

It is true that impatience, the mother of stupidity, praises brevity, as if such persons had not life long enough to serve them to acquire a complete knowledge of one single subject, such as the human body; and then they want to comprehend the mind of God in which the universe is included, weighing it minutely and mincing it into infinite parts, as if they had to dissect it!

The mind that engages in subjects of too great variety becomes confused and weakened.

The mind passes in an instant from east to west; and all the great incorporeal things resemble these very closely in speed.

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

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

I mean, my mind is a storm, and I don't think most people would want to be me. They may think they would want to be me, but they don't.

Leonardo da Vinci quote: Iron rusts from disuse; water ... | QuoteBooklet