The desire which a man has for a woman is not directed towards her because she is a human being, but because she is a woman ; that she is a human being is of no concern to the man; only her sex is the object of his desires.

Life is the faculty of spontaneous activity, the awareness that we have powers.

Nature, when left to universal laws, tends to produce regularity out of chaos.

Human reason has this peculiar fate that in one species of its knowledge it is burdened by questions which, as prescribed by the very nature of reason itself, it is not able to ignore, but which, as transcending all its powers, it is also not able to answer.

The question is not so much whether there is life on Mars as whether it will continue to be possible to live on Earth

In every department of physical science there is only so much science, properly so-called, as there is mathematics.

The bad thing of war is, that it makes more evil people than it can take away.