Happiness gives us the energy which is the basis of health.

A thousand things advance; nine hundred and ninety nine retreat; That is progress.

It is by teaching that we teach ourselves, by relating that we observe, by affirming that we examine, by showing that we look, by writing that we think, by pumping that we draw water into the well.

To feel keenly the poetry of a morning's roses, one has to have just escaped from the claws of this vulture which we call sickness.

Philosophy means the complete liberty of the mind.

Our greatest illusion is to believe that we are what we think ourselves to be.

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.