I believe that much of the maladjustment in our societies is caused, not by malevolence and corruption, but simply by ignorance.

The aim of those who try to control thought is always the same. They find one single explanation of the world, one system of thought and action that will (they believe) cover everything; and then they try to impose that on all thinking people.

The relation between parents and children is essentially based on teaching.

These are not books, lumps of lifeless paper, but minds alive on the shelves.

What is politics but persuading the public to vote for this and support that and endure these for the promise of those?

A very wise old teacher once said: I consider a day's teaching wasted if we do not all have one hearty laugh.

A period of high civilization is one in which thoughts fly freely from mind to mind, from one country to another-yes, from the past into the present.