We cannot teach children the danger of telling lies to men without realising, on the man's part, the danger of telling lies to children. A single untruth on the part of the master will destroy the results of his education.

It is in man's heart that the life of nature's spectacle exists; to see it, one must feel it.

I am not made like any of those I have seen. I venture to believe that I am not made like any of those who are in existence. If I am not better, at least I am different.

Teach him to live rather than to avoid death: life is not breath, but action, the use of our senses, our mind, our faculties, every part of ourselves which makes us conscious of our being. Life consists less in length of days than in the keen sense of living. A man maybe buried at a hundred and may never have lived at all. He would have fared better had he died young.

It is believed that physiognomy is only a simple development of the features already marked out by nature. It is my opinion, however, that in addition to this development, the features come insensibly to be formed and assume their shape from the frequent and habitual expression of certain affections of the soul. These affections are marked on the countenance; nothing is more certain than this; and when they turn into habits, they must leave on it durable impressions.

Sovereigns always see with pleasure a taste for the arts of amusement and superfluity, which do not result in the exportation of bullion, increase among their subjects. They very well know that, besides nourishing that littleness of mind which is proper to slavery, the increase of artificial wants only binds so many more chains upon the people.

No true believer could be intolerant or a persecutor. If I were a magistrate and the law carried the death penalty against atheists, I would begin by sending to the stake whoever denounced another.