When one speaks of humanity, the idea is fundamental that this is something which separates and distinguishes man from nature. In reality, however, there is no such separation: "natural" qualities and those called truly "human" are inseparably grown together. Man, in his highest and noblest capacities, is wholly nature and embodies its uncanny dual character. Those of his abilities which are terrifying and considered inhuman may even be the fertile soil out of which alone all humanity can grow in impulse, deed, and work.

What makes one heroic? - Going out to meet at the same time one's highest suffering and one's highest hope.

Illusions are certainly expensive amusements; but the destruction of illusions is still more expensive, if looked upon as an amusement, as it undoubtedly is by some people.

What the father kept silent the son speaks out.

A matter that becomes clear ceases to concern us.

As a result, nature is something entirely different from what comes to mind when we invoke its name.

Egoism is the law of perspective applied to feelings: what is closest appears large and weighty, and as one moves farther away size and weight decrease.