Vanity of science. Knowledge of physical science will not console me for ignorance of morality in time of affliction, but knowledge of morality will always console me for ignorance of physical science.

Now, if the passions had no hold on us, a week and a hundred years would amount to the same.

Vanity is illustrated in the cause and effect of love, as in the case of Cleopatra.

We need not have the loftiest mind to understand that here is no lasting and real satisfaction, that our pleasures are only vanity, that our evils are infinite, and, lastly, that death, which threatens us every moment, must infallibly place us within a few years under the dreadful necessity of being forever either annihilated or unhappy.

The imagination disposes of everything. It creates beauty, justice, and happiness, which are the whole of the world.

Let each of us examine his thoughts

The sum of a man's problems come from his inability to be alone in a silent room.