[Sabertooth]

Ethics," writes Ayn Rand, "is an objective, metaphysical necessity of man's survival -- not by the grace of the supernatural nor of your neighbors nor of your whims, but by the grace of reality and the nature of life."

Exchanging the supernatual for the natural is favoring the creation over the Creator. Old old, argument.

[Tribune7]

Ethics," writes Ayn Rand, "is an objective, metaphysical necessity of man's survival"

But if man is not spiritually different than any other animal why should this be the case? Other creatures survive without our Western Judeo-Christian, property respecting, life respecting, take-care-of-the-old-and-ill ethics. Why should we need them to survive?