(NN) Nature of the Superior

While reading this weeks chapters I came across the statement "nature teaches that the superior should exploit and rule the weaker". This was a belief held by a Sophist named Callicles, who lived circa 480-403 B.C.E.
This statement is similar to the beliefs held later by Darwin and his theory "survival of the fittest". Callicles along with Darwin believed that it was the job of the more "superior" humans to raise above the weaker of the species. Callicles even went as far as to say that it is human nature for the "superior" to "exploit and rule the weaker".
I for one don't agree with any of these points. I feel that all humans are equal and no one person is "superior" to another. When you look at what humans have made impacts they aren't always the people Callicles or Darwin would have called superior. Mattie Stephanek was a child who was born with muscular dystrophy disease, naturally Callicles and Darwin would put him into the "weaker" category, but he's not. Having lost a sibling to MD at a young age Mattie turned to the MDA and Jerry Lewis to help spread his message of peace. This boy, who died four years ago, is my greatest inspiration and in context to to this blog he is the perfect example of someone who you would think was weak but was not. I'm not sure the point I'm trying to make is completely clear here...if the human nature of the weaker was to be exploited by the superior than Mattie would have never made the impact he made on so many people, the weak have strength and they can use it. So when I think of Mattie and others like him I really can't buy the idea that "nature teaches that the superior should exploit and rule the weaker." Also being a Catholic I believe the quote from the Bible "the meek shall inherit the Earth", now I don't believe that as complete truth it is a metaphor for life.