I have lived to prove Thoreau's contention that a man is rich in proportion to the number of things which he can afford to let alone.

It is little short of a miracle that modern methods of instruction have not already completely strangled the holy curiosity of inquiry.... I believe that one could even deprive a healthy beast of prey of its voraciousness if one could force it with a whip to eat continuously whether it were hungry or not.

A ship is safe at shore but it's not built for that.

Often in evolutionary processes a species must adapt to new conditions in order to survive. Today the atomic bomb has altered profoundly the nature of the world as we know it, and the human race consequently finds itself in a new habitat to which it must adapt its thinking.

The world needs heroes and it's better they be harmless men like me than villains like Hitler

To understand the world one must not be worrying about one's self.

The first and most important necessity is the creation of a modus vivendi with the Arab people.