Liberty is obedience to the law which one has laid down for oneself

Christ preaches only servitude and dependence... True Christians are made to be slaves.

The thirst after happiness is never extinguished in the heart of man.

There are two things to be considered with regard to any scheme. In the first place, Is it good in itself? In the second, Can it be easily put into practice?

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.

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

Teach your scholar to observe the phenomena of nature; you will soon rouse his curiosity, but if you would have it grow, do not be in too great a hurry to satisfy this curiosity. Put the problems before him and let him solve them himself. Let him know nothing because you have told him, but because he has learnt it for himself. Let him not be taught science, let him discover it. If ever you substitute authority for reason he will cease to reason; he will be a mere plaything of other people's thoughts.