Muhammad established a religion by putting his enemies to death; Jesus Christ by commanding his followers to lay down their lives.

Faith embraces many truths which seem to contradict each other.

When intuition and logic agree, you are always right.

We must keep our thought secret, and judge everything by it, while talking like the people.

Clarity of mind means clarity of passion, too; this is why a great and clear mind loves ardently and sees distinctly what it loves.

It is right that what is just should be obeyed. It is necessary that what is strongest should be obeyed.

All our life passes in this way: we seek rest by struggling against certain obstacles, and once they are overcome, rest proves intolerable because of the boredom it produces.