Freedom is the alone unoriginated birthright of man, and belongs to him by force of his humanity.

From such crooked wood as that which man is made of, nothing straight can be fashioned.

Man's greatest concern is to know how he shall properly fill his place in the universe and correctly understand what he must be in order to be a man.

At some future day it will be proved, I cannot say when and where, that the human soul is, while in earth life, already in an uninterrupted communication with those living in another world.

The science of mathematics presents the most brilliant example of how pure reason may successfully enlarge its domain without the aid of experience

All the interests of my reason, speculative as well as practical, combine in the three following questions: 1. What can I know? 2. What ought I to do? 3. What may I hope?

Whereas the beautiful is limited, the sublime is limitless, so that the mind in the presence of the sublime, attempting to imagine what it cannot, has pain in the failure but pleasure in contemplating the immensity of the attempt