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It is sometimes important for science to know how to forget the things she is surest of.
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It is sometimes well for a blatant error to draw attention to overmodest truths.
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We must watch over our modesty in the presence of those who cannot understand its grounds.
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A few great minds are enough to endow humanity with monstrous power, but a few great hearts are not enough to make us worthy of using it.
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I prefer the honest jargon of reality to the outright lies of books.
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To love an idea is to love it a little more than one should.