Intuition and concepts constitute... the elements of all our knowledge, so that neither concepts without an intuition in some way corresponding to them, nor intuition without concepts, can yield knowledge.

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

He who is cruel to animals becomes hard also in his dealings with men. We can judge the heart of a man by his treatment of animals.

Religion is the recognition of all our duties as divine commands.

Science is organized knowledge. Wisdom is organized life.