It is clear that those constitutions which aim at the common good are right, as being in accord with absolute justice; while those which aim only at the good of the rulers are wrong.

Happiness lies in virtuous activity, and perfect happiness lies in the best activity, which is contemplative

The blood of a goat will shatter a diamond.

Friendship is communion.

Mothers are fonder than fathers of their children because they are more certain they are their own.

It is the mark of an educated mind to expect that amount of exactness which the nature of the particular subject admits. It is equally unreasonable to accept merely probable conclusions from a mathematician and to demand strict demonstration from an orator.

If purpose, then, is inherent in art, so is it in Nature also. The best illustration is the case of a man being his own physician, for Nature is like that - agent and patient at once.