The student of politics therefore as well as the psychologist must study the nature of the soul.

There are two distinctive peculiarities by reference to which we characterize the soul (1) local movement and (2) thinking, discriminating, and perceiving. Thinking both speculative and practical is regarded as akin to a form of perceiving; for in the one as well as the other the soul discriminates and is cognizant of something which is.

What has soul in it differs from what has not, in that the former displays life. Now this word has more than one sense, and provided any one alone of these is found in a thing we say that thing is living. Living, that is, may mean thinking or perception or local movement and rest, or movement in the sense of nutrition, decay and growth. Hence we think of plants also as living, for they are observed to possess in themselves an originative power through which they increase or decrease in all spatial directions.

A good style must, first of all, be clear. It must not be mean or above the dignity of the subject. It must be appropriate.

Character is determined by choice, not opinion.

Dissimilarity of habit tends more than anything to destroy affection.

The shape of the heaven is of necessity spherical; for that is the shape most appropriate to its substance and also by nature primary.