All thought must, directly or indirectly, by way of certain characters, relate ultimately to intuitions, and therefore, with us, to sensibility, because in no other way can an object be given to us.

The death of dogma is the birth of morality.

In law a man is guilty when he violates the rights of others. In ethics he is guilty if he only thinks of doing so.

Do what is right, though the world may perish.

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

But although all our knowledge begins with experience, it does not follow that it arises from experience.

There can be no doubt that all our knowledge begins with experience.