Dreams are excursions into the limbo of things, a semi-deliverance from the human prison.

In health there is freedom. Health is the first of all liberties.

Doubt of the reality of love ends by making us doubt everything.

To marry unequally is to suffer equally.

The philosopher is like a man fasting in the midst of universal intoxication. He alone perceives the illusion of which all creatures are the willing playthings; he is less duped than his neighbor by his own nature. He judges more sanely, he sees things as they are. It is in this that his liberty consists - in the ability to see clearly and soberly, in the power of mental record.

[T]he habit of scientific analysis ... exhausts the material offered to it.

Common sense is calculation applied to life.