Freedom is absolutely necessary for the progress in science and the liberal arts.

We strive to further the occurrence of whatever we imagine will lead to Joy, and to avert or destroy what we imagine is contrary to it, or will lead to Sadness.

It is sure that those are most desirous of honour or glory who cry out loudest of its abuse and the vanity of the world.

If anyone conceives that he is loved by another, and believes that he has given no cause for such love, he will love that other in return.

. . . to know the order of nature, and regard the universe as orderly is the highest function of the mind.

Nothing in the universe is contingent, but all things are conditioned to exist and operate in a particular manner by the necessity of the divine nature.

Happiness is not the reward of virtue, but is virtue itself; nor do we delight in happiness because we restrain from our lusts; but on the contrary, because we delight in it, therefore we are able to restrain them.