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.

How then is perfection to be sought? Wherein lies our hope? In education, and in nothing else.

It is through good education that all the good in the world arises.

Natural science physics contains in itself synthetical judgments a priori, as principles. ... Space then is a necessary representation a priori, which serves for the foundation of all external intuitions.

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.

Live your life as though your every act were to become a universal law.

The death of dogma is the birth of morality.