There is no such thing as morality—only varingly expedient conventions. What to one race is a crime, is virtue to another; crime in one era is virtue in another; even a crime in one class of society is at the same time and in the same society virtue in another class... It makes no difference whether people are called good or bad; we are all here; now; there is only one world in existence, and in it there prevail either expedient or inexpedient conditions for those who are alive.

Atómstöðin (The Atom Station) (1948)