Human creatures have a single power over all other creatures. We can all be amazed at the instincts of the animal kindom. Regardless of the strength and cunning of dangerous creatures in nature people have a power far greater even though physical strength IS puny by comparison. The power is found in our head...the mind. It makes sense to feed our mind and increase its ability to remain effective. Without intended use and care of our brain we would become defenseless from just about any preditor including other people who would harm or outwit us.