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Nature is the most thrifty thing in the world; she never wastes anything; she undergoes change, but there is no annihilation, the essence remains - matter is eternal.

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Nature is a mutable cloud, which is always and never the same.

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Nature hates calculators.

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Education is what survives when what has been learned has been forgotten.

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Nature is not affected by finance. If someone offered you ten thousand dollars to let them touch your eyeball without blinking, you would never collect the money. At the very last moment, Nature would force you to blink your eye. Nature will protect her own.

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What nature delivers to us is never stale. Because what nature creates has eternity in it.

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How much time he saves who does not look to see what his neighbor says or does or thinks.

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The man who never alters his opinions is like standing water, and breeds reptiles of the mind.

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Popular opinion is the greatest lie in the world.

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No liberal man would impute a charge of unsteadiness to another for having changed his opinion.

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