Philosophy is the science which considers truth.

Two characteristic marks have above all others been recognized as distinguishing that which has soul in it from that which has not - movement and sensation.

The heart is the perfection of the whole organism. Therefore the principles of the power of perception and the souls ability to nourish itself must lie in the heart.

No one praises happiness as one praises justice, but we call it a 'blessing,' deeming it something higher and more divine than things we praise.

Virtue is more clearly shown in the performance of fine ACTIONS than in the non-performance of base ones.

To be angry is easy. But to be angry with the right man at the right time and in the right manner, that is not easy.

... There must then be a principle of such a kind that its substance is activity.