It is clear that there is some difference between ends: some ends are energeia [energy], while others are products which are additional to the energeia.

The soul has two parts, one rational and the other irrational. Let us now similarly divide the rational part, and let it be assumed that there are two rational faculties, one whereby we contemplate those things whose first principles are invariable, and one whereby we contemplate those things which admit of variation.

There is more both of beauty and of raison d'etre in the works of nature- than in those of art.

All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion, desire.

We become just by performing just action, temperate by performing temperate actions, brave by performing brave action.

The knowledge of the soul admittedly contributes greatly to the advance of truth in general, and, above all, to our understanding of Nature, for the soul is in some sense the principle of animal life.

Those who act receive the prizes.