Greed

Greed can be thought of as the desire to take for oneself without giving back. We most likely think of someone who carries a lot of material or monetary things and keeps wanting more as someone greedy. It makes sense that those who were greedy in ancient times survived because they ate when food was scarce. On the flip side, it is also easy to see how groups survived who were not greedy and shared resources. If people acted as greedy, lone wolves surely did not survive.