The political problem of mankind is to combine three things: economic efficiency, social justice and individual liberty.

... a speculator is one who runs risks of which he is aware and an investor is one who runs risks of which he is unaware.

The ideas of economists and political philosophers, both when they are right and when they are wrong, are more powerful than is generally understood. Indeed, the world is ruled by little else.

So it is not an accident that the Nazi lads vent a particular fury against (Einstein). He does truly stand for what they most dislike, the opposite of the blond beast intellectualist, individualist, supernationalist, pacifist, inky, plump... How should they know the glory of the free-ranging intellect and soft objective sympathy to whom money and violence, drink and blood and pomp, mean absolutely nothing?

If we consistently act on the optimistic hypothesis, this hypothesis will tend to be realised; whilst by acting on the pessimistic hypothesis we can keep ourselves for ever in the pit of want.

Nothing mattered except states of mind, chiefly our own.

There is no subtler, no surer means of overturning the existing basis of society than to debauch the currency.