Unlimited competition leads to a huge waste of labor, and to that crippling of the social consciousness of individuals.

Common sense is the collection of prejudices acquired by age eighteen.

The strongest force in the universe is Compound Interest.

The indifference, callousness and contempt that so many people exhibit toward animals is evil first because it results in great suffering in animals, and second because it results in an incalculably great impoverishment of the human spirit.

Yes, we now have to divide up our time like that, between politics and our equations. But to me our equations are far more important, for politics are only a matter of present concern. A mathematical equation stands forever.

Long live impudence. It was my guardian angel in this world.

A single bomb of this type, carried by boat and exploded in a port, might very well destroy the whole port, together with some of the surrounding territory.