If there is anything in the world that can really be called a man's property, it is surely that which is the result of his mental activity.

In action a great heart is the chief qualification. In work, a great head.

In our monogamous part of the world, to marry means to halve one's rights and double one's duties.

The ordinary method of education is to imprint ideas and opinions, in the strict sense of the word, prejudices, on the mind of the child, before it has had any but a very few particular observations. It is thus that he afterwards comes to view the world and gather experience through the medium of those ready-made ideas, rather than to let his ideas be formed for him out of his own experience of life, as they ought to be.

What disturbs and depresses young people is the hunt for happiness on the firm assumption that it must be met with in life. From this arises constantly deluded hope and so also dissatisfaction. Deceptive images of a vague happiness hover before us in our dreams, and we search in vain for their original. Much would have been gained if, through timely advice and instruction, young people could have had eradicated from their minds the erroneous notion that the world has a great deal to offer them.

Of all the intellectual faculties, judgment is the last to mature. A child under the age of fifteen should confine its attention either to subjects like mathematics, in which errors of judgment are impossible, or to subjects in which they are not very dangerous, like languages, natural science, history, etc.

For the purpose of acquiring gain, everything else is pushed aside or thrown overboard, for example, as is philosophy by the professors of philosophy.