Human being. A beast that has to be tamed?

Subconscious. What is the subconscious? Or more likely what do people think that subconscious is? Even more, is the idea of subconscious universal or it changes from place to place, culture from culture or even from era to era? Would the changes in time and place matter? Can the subconscious really assume psychological content? Be evil or good? Harbour feelings, hates, animosities or even love, compassion, altruism?