Philosophy, if it cannot answer so many questions as we could wish, has at least the power of asking questions which increase the interest of the world, and show the strangeness and wonder lying just below the surface even in the commonest things of daily life.

I don't like the spirit of socialism - I think freedom is the basis of everything.

I can only say that, while my own opinions as to ethics do not satisfy me, other people's satisfy me still less.

Every living thing is a sort of imperialist, seeking to transform as much as possible of its environment into itself.

In the great depression, things could only be set right by causing the idle plant to work again . . . Roosevelt . . . spent billions of public money and created a huge public debt, but by so doing he revived production and brought his country out of the depression. Businessmen, who in spite of such a sharp lesson continued to believe in old-fashioned economics, were infinitely shocked, and although Roosevelt saved them from ruin, they continued to curse him and to speak of him as 'the madman in the White House.' . . . [It's one more] striking example of inability to learn from experience.

Nothing is so exhausting as indecision, and nothing is so futile.

Science has made unrestricted national sovereignty incompatible with human survival. The only possibilities are now world government or death.