To overcome difficulties is to experience the full delight of existence.

A reproach can only hurt if it hits the mark. Whoever knows that he does not deserve a reproach can treat it with contempt.

The tallest oak tree once was an acorn that any pig could have swallowed.

Means at our disposal should be regarded as a bulwark against the many evils and misfortunes that can occur. We should not regard such wealth as a permission or even an obligation to procure for ourselves the pleasures of the world.

To be shocked at how deeply rejection hurts is to ignore what acceptance involves. We must never allow our suffering to be compounded by suggestions that there is something odd in suffering so deeply. There would be something amiss if we didn't.

That arithmetic is the basest of all mental activities is proved by the fact that it is the only one that can be accomplished by a machine.

The more unintelligent a man is, the less mysterious existence seems to him.