Leisure is one of the three greatest rewards of being a teacher. It is, unfortunately, the privilege which teachers most often misuse.

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.

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.

These are not books, lumps of lifeless paper, but minds alive on the shelves. From each of them goes out its own voice... and just as the touch of a button on our set will fill the room with music, so by taking down one of these volumes and opening it, one can call into range the voice of a man far distant in time and space, and hear him speaking to us, mind to mind, heart to heart.

Know the subject; love the subject; like your students; know your students.

The wise teacher knows that 55 minutes of work plus 5 minutes laughter are worth twice as much as 60 minutes of unvaried work.

At certain times and in certain schools it is orthodox to be a rebel; and in general it is a very poor class that does not contain at least three pupils who can be counted on to oppose the teachers authority and loudly and persistently to question everything he says.