Is it not a terrible thing to be forced by society to do things which all of us as individuals regard as abominable crimes?

There is no salvation for civilization, or even the human race, other than the creation of a world government.

The idle man does not know what it is to enjoy rest.

Unless the cause of peace based on law gathers behind it the force and zeal of a religion, it hardly can hope to succeed.

The most valuable thing a teacher can impart to children is not knowledge and understanding per se but a longing for knowledge and understanding, and an appreciation for intellectual values, whether they be artistic, scientific, or moral. It is the supreme art of the teacher to awaken joy in creative expression and knowledge. Most teachers waste their time by asking questions that are intended to discover what a pupil does not know, whereas the true art of questioning is to discover what the pupil does know or is capable of knowing.

I think that only daring speculation can lead us further and not accumulation of facts.

Children don’t heed the life experiences of their parents, and nations ignore history. Bad lessons always have to be learned anew.