These two rational faculties may be designated the Scientific Faculty and the Calculative Faculty respectively; since calculation is the same as deliberation, and deliberation is never exercised about things that are invariable, so that the Calculative Faculty is a separate part of the rational half of the soul.
Men in general desire the good and not merely what their fathers had.
For knowing is spoken of in three ways: it may be either universal knowledge or knowledge proper to the matter in hand or actualising such knowledge; consequently three kinds of error also are possible.
A whole is that which has a beginning, a middle and an end.
No science ever defends its first principles.
The true nature of a thing is the highest it can become.
It is their character indeed that makes people who they are. But it is by reason of their actions that they are happy or the reverse.
...in this way the structure of the universe- I mean, of the heavens and the earth and the whole world- was arranged by one harmony through the blending of the most opposite principles.
It is of itself that the divine thought thinks (since it is the most excellent of things), and its thinking is a thinking on thinking.
Happiness is an expression of the soul in considered actions.