I regard it in fact as the great advantage of the mathematical technique that it allows us to describe, by means of algebraic equations, the general character of a pattern even where we are ignorant of the numerical values which will determine its particular manifestation.

The mind cannot foresee its own advance.

To be controlled in our economic pursuits means to be controlled in everything.

We shall never prevent the abuse of power if we are not prepared to limit power in a way which occasionally may prevent its use for desirable purposes.

Freedom can be preserved only if it is treated as a supreme principle which must not be sacrificed for particular advantages.

If the resources of different nations are treated as exclusive properties of these nations as wholes, if international economic relations, instead of being relations between individuals, become increasingly relations between whole nations organized as trading bodies, they inevitably become the source of friction and envy between whole nations.

We must shed the illusion that we can deliberately 'create the future of mankind'