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"What need is there to weep over parts of life? The whole of it calls for tears."

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"It is not that we have a short time to live, but that we waste much of it."

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"Luck is what happens when preparation meets opportunity."

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"As long as you live, keep learning how to live."

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"No man was ever wise by chance."

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"Difficulties strengthen the mind, as labor does the body."

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"The whole future lies in uncertainty: live immediately."

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"You have all the fears of mortals and all the desires of immortals."

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"He who is brave is free."

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"A gem cannot be polished without friction, nor a man perfected without trials."

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"Life is long, if you know how to use it."

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"While we are postponing, life speeds by."

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"To be everywhere is to be nowhere."

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"What is harder than rock? What is softer than water? Yet hard rocks are hollowed out by soft water."

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"It is the power of the mind to be unconquerable."