If men had known how to permeate the soul with mathematics in the right way in the arithmetic lessons during these past years, we should not now have Bolshevism in Eastern Europe.

To understand the nature of love — that is to be a Christian!

To be free is to be capable of thinking one's own thoughts - not the thoughts merely of the body, or of society, but thoughts generated by one's deepest, most original, most essential and spiritual self, one's individuality.

The smallest thing in its rightful place can lead to the highest goals.

In a community of human beings working together, the well-being of the community will be the greater, the less the individual claims for himself the proceeds of the work he has himself done; i.e., the more of these proceeds he makes over to his fellow workers, and the more his own requirements are satisfied, not out of his own work done, but out of work done by the others.

Most naughtiness arises because the children are bored and lack a relationship with the teacher.

Intuition is for thinking what observation is for perception. Intuition and observation are the sources of our knowledge.