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Irons rusts from disuse, stagnant water loses its purity and in co

Irons rusts from disuse, stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigor of the mind. – Leonardo da Vinci, Notebooks, 1508

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Some people do not become thinkers simply because their memories are too good. – Friedrich Wilhelm Nietzsche

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A sect or party is an elegant incognito devised to save a man from the vexation of thinking. – Ralph Waldo Emerson

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The forceps of our minds are clumsy things and crush the truth a little in the course of taking hold of it. – H.G. Wells

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