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To despise theory is to have the excessively vain pretension to do without knowing what one does, and to speak without knowing what one says.

Bernard le Bovier de Fontenelle

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Bernard le Bovier de Fontenelle
Speak
Doe
Excessively
Without
Pretension
Despise
Vain
Theory
Says
Knowing

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Nature intends that, at fixed periods, men should succeed each other by the instrumentality of death. We shall never outwit Nature we shall die as usual.
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It is the passions that do and undo everything.
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Hardly anyone knows how much is gained by ignoring the future.
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The judgment may be compared to a clock or watch, where the most ordinary machine is sufficient to tell the hours but the most elaborate alone can point out the minutes and seconds, and distinguish the smallest differences of time.
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Leibniz never married he had considered it at the age of fifty but the person he had in mind asked for time to reflect. This gave Leibniz time to reflect, too, and so he never married.
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We must always skim over pleasures. They are like marshy lands that we must travel nimbly, hardly daring to put down our feet.
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A philosopher will not believe what he sees because he is too busy speculating about what he does not see.
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Let us be well assured of the Matter of Fact, before we trouble our selves with enquiring into the Cause. It is true, that this Method is too slow for the greatest part of Mankind, who run naturally to the Cause, and pass over the Truth of the Matter of Fact.
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Modesty in women has two special advantages,--it enhances beauty and veils uncomeliness.
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Mathematicians are like lovers. Grant a mathematician the least principle, and he will draw from it a consequence which you must also grant him, and from this consequence another.
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I have lived one hundred years and I die with the consolation of never having thrown the slightest ridicule upon the smallest virtue.
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I feel nothing, apart from a certain difficulty in continuing to exist.
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If I held all the thoughts of the world in my hand, I would be careful not to open it.
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It is high time for me to depart, for at my age I now begin to see things as they really are.
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Since the princes take the Earth for their own, it's fair that the philosophers reserve the sky for themselves and rule there, but they should never permit the entry of others.
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People almost always do great things without knowing how to do them, and are quite surprised to have done them.
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It takes time to ruin a world, but time is all it takes.
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As astronomy is the daughter of idleness, geometry is the daughter of property.
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A philospher sees the Earth as a large planet, travelling through the heavens, covered with fools
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To be happy, one must have a good stomach and a bad heart.
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