Property should be in a general sense common, but as a general rule private... In well-ordered states, although every man has his own property, some things he will place at the disposal of his friends, while of others he shares the use of them.

He is courageous who endures and fears the right thing, for the right motive, in the right way and at the right times.

The best things are placed between extremes.

If what was said in the Ethics is true, that the happy life is the life according to virtue lived without impediment, and that virtue is a mean, then the life which is in a mean, and in a mean attainable by every one, must be the best. And the same principles of virtue and vice are characteristic of cities and of constitutions; for the constitution is in a figure the life of the city.

Nature does nothing without a purpose. In children may be observed the traces and seeds of what will one day be settled psychological habits, though psychologically a child hardly differs for the time being from an animal.

The intelligence consists not only in the knowledge but also in the skill to apply the knowledge into practice.

Where perception is, there also are pain and pleasure, and where these are, there, of necessity, is desire.