On the contrary, there are basic inviolable principles of good and evil and right and wrong which apply to all men for all time. In fact, these principles do not apply only to men, but to many life forms. Instinctive moral systems occur in the behavior patterns of most social animals, such as the ant. If the ant violated the immemorial laws which must direct his cooperative instinct, the ant species would cease to exist. It seems pain that if the homo sapien violates the biological laws which must direct his cooperative instinct the human race will also cease to exist.
Morality is necessary for social cooperation.
Social cooperation is necessary for survival. Therefore, morality is necessary for survival. Good then is what promotes social and international cooperation and evil is what destroys that cooperation because that decreases man's chances of survival. Good and evil are not myths, although many myths have been written about them. They are a prerequisite for human survival.