The will is conceived as a faculty of determining oneself to action in accordance with the conception of certain laws. And such a faculty can be found only in rational beings.

To behold virtue in her proper form is nothing else but to contemplate morality stripped of all admixture of sensible things and of every spurious ornament of reward or self-love. How much she then eclipses everything else that appears charming to the affections, every one may readily perceive with the least exertion of his reason, if it be not wholly spoiled for abstraction.

The possession of power unavoidably spoils the free use of reason

Happiness is not an ideal of reason but of imagination

Nothing is divine but what is agreeable to reason.

Happiness is not an ideal of reason, but of imagination.