Women react differently: a French woman who sees herself betrayed by her husband will kill his mistress; an Italian will kill her husband; a Spaniard will kill both; and a German will kill herself.
To be happy, one must have a good stomach and a bad heart.
Behold a universe so immense that I am lost in it. I no longer know where I am. I am just nothing at all. Our world is terrifying in its insignificance.
A philosopher will not believe what he sees because he is too busy speculating about what he does not see.
A true philosopher is like an elephant; he never puts the second foot down until the first one is solidly in place.
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.
Hardly anyone knows how much is gained by ignoring the future.
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.
People almost always do great things without knowing how to do them, and are quite surprised to have done them.
It is a great obstacle to happiness to expect too much.
An educated mind is, as it were, composed of all the minds of preceding ages.
There are three things I have loved but never understood. Art, music and women.
If I had my hand full of truth, I would take good care how I opened it.
It is high time for me to depart, for at my age I now begin to see things as they really are.
Nature is never so admired as when she is understood.
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.
Modesty in women has two special advantages,--it enhances beauty and veils uncomeliness.
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.
I have lived one hundred years; and I die with the consolation of never having thrown the slightest ridicule upon the smallest virtue.
As astronomy is the daughter of idleness, geometry is the daughter of property.
They will have the World to be in Large, what a Watch is in Small; which is very regular, and depends only upon the just disposing of the several Parts of the Movement.
Nothing can be more destructive to ambition, and the passion for conquest, than the true system of astronomy. What a poor thing is even the whole globe in comparison of the infinite extent of nature!
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.
If I held all the thoughts of the world in my hand, I would be careful not to open it.
A well-cultivated mind is, so to speak, made up of all the minds of preceding ages; it is only one single mind which has been educated during all this time.
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