A political leader must keep looking over his shoulder all the time to see if the boys are still there. If they arent still there, hes no longer a political leader.

Making a success of the job at hand is the best step toward the kind you want.

It is far more difficult... to know when to sell a stock than when to buy.

Our problem in money-making or government affairs is how to remain properly venturesome and experimental without making fools of ourselves.

Behind the black portent of the new atomic age lies a hope which, seized upon with faith, can work out salvation... Let us not deceive ourselves: we must elect world peace or world destruction.

Whatever task you undertake, do it with all your heart and soul. Always be courteous, never be discouraged. Beware of him who promises something for nothing. Do not blame anybody for your mistakes and failures. Do not look for approval except the consciousness of doing your best.

Peace is never long preserved by weight of metal or by an armament race. Peace can be made tranquil and secure only by understanding and agreement fortified by sanctions. We must embrace international cooperation or international disintegration. Science has taught us how to put the atom to work. But to make it work for good instead of for evil lies in the domain dealing with the principles of human dignity. We are now facing a problem more of ethics than of physics.