Patience is the strength of the weak, impatience is the weakness of the strong.

Physicians think they do a lot for a patient when they give his disease a name.

All human knowledge begins with intuitions, proceeds from thence to concepts, and ends with ideas.

An action, to have moral worth, must be done from duty.

Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.

In the mere concept of one thing it cannot be found any character of its existence.

If it were possible for us to have so deep an insight into a man's character as shown both in inner and in outer actions, that every, even the least, incentive to these actions and all external occasions which affect them were so known to us that his future conduct could be predicted with as great a certainty as the occurrence of a solar or lunar eclipse, we could nevertheless still assert that the man is free.