No good water comes from a muddy spring. No sweet fruit comes from a bitter seed.

I don't see why I should bow my head when I could hold it high, or place it in the hands of my enemies when I can defeat them.

To live is to be among men, and to be among men is to struggle, a struggle not only with them but with oneself; with their passions, but also with one's own.

Ignorance is servitude, because as a man thinks, so he is; a man who does not think for himself and allows himself to be guided by the thought of another is like the beast led by a halter.

The example could encourage others who only fear to start.

I do not write for this generation. I am writing for other ages. If this could read me, they would burn my books, the work of my whole life. On the other hand, the generation which interprets these writings will be an educated generation; they will understand me and say: Not all were asleep in the nighttime of our grandparents.

On this battlefield man has no better weapon than his intelligence, no other force but his heart.