Ethical egoism is the idea that one should do whatever benefits their own greatest good. However, this does not mean being egotistical or selfish. Being considerate of others can actually be in one's own best interest by allowing for cooperation. This view is known as "enlightened egoism." Thomas Hobbes adopted this position, believing it was rational for individuals to follow social contracts and moral rules in order to avoid harm from other self-interested individuals. Psychological egoism holds that humans are primarily motivated by self-interest by human nature, but critics argue this fails to account for sympathetic concern for others.