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.

All friendly feelings toward others come from the friendly feelings a person has for himself.

What we know is not capable of being otherwise; of things capable of being otherwise we do not know, when they have passed outsideour observation, whether they exist or not. Therefore the object of knowledge is of necessity. Therefore it is eternal; for things that are of necessity in the unqualified sense are all eternal; and things that are eternal are ungenerated and imperishable.

Meanness is incurable; it cannot be cured by old age, or by anything else.

So the good has been well explained as that at which all things aim.

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

Our actions determine our dispositions.