Sacrifice.
Civilization was built upon it.
Wilderness filled with beasts whereupon the blood of hunters spilt, corpses of warriors sprinkled upon ancient battlefield—when a race is forced to fight other powerful species, it is the voluntary sacrifice of the brave that save many.
From the oldest papyrus, we learned that Chaos already existed dozens of thousands of years ago. At the time, our race had no magic, aura, ether, psionic power, or holy light. We had nothing then, and sacrifice was thus required for the right to survive.
