When you come to look into this argument from design, it is a most astonishing thing that people can believe that this world, with all the things that are in it, with all its defects, should be the best that omnipotence and omniscience has been able to produce in millions of years.

The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.

This idea of weapons of mass extermination is utterly horrible and is something which no one with one spark of humanity can tolerate.

Man can be scientifically manipulated.

I am not myself in any degree ashamed of having changed my opinions.

Mathematics, rightly viewed, possesses not only truth, but supreme beauty-a beauty cold and austere ... yet sublimely pure and capable of stern perfection such as only the greatest art can show.

Hitler is an outcome of Rousseau.