Relativity must replace absolutism in the realm of morals as well as in the spheres of physics and biology.

Loyalty to the family must be merged into loyalty to the community, loyalty to the community into loyalty to the nation, and loyalty to the nation into loyalty to mankind. The citizen of the future must be a citizen of the world.

Morality—like velocity—is relative. The determination of it depends on what the objects around you are doing. All one can do is measure one's position in relation to them; never can one measure one's velocity or morality in terms of absolutes.

A relativist is an individual who doesn't know the difference between an adjective and an adverb.

If the individual is to be happy in the contemporary order, he must be open-minded with respect to new values and new arrangements.

A university student attending lectures on general relativity i the morning and others on quantum mechanics in the afternoon might be forgiven for thinking that his professors are fools, or have neglected to communicate with each other for at least a century.