Love between mother and child comes from nature; it exists among animals as well and it is a natural love. The mother does not undergo certain corrections in order to love her child. She loves her child because it is implanted in her nature. If we switched off a certain system in her brain, she would stop loving her child and would relate to the child as to anybody else. The relationship between mother and child is not love.
Based to what we can understand, all of our relationships – such as relationship between mother and child, and, in general, between people in this world – are not love. It is either natural instinct, defined by our genes, that is, our natural systems that compel us to act in a certain way towards each other, or it stems from our egoism, when I feel pleasure and, thus, become attached to someone.
Courtesy of http://www.youtube.com/watch?v=zmVFnhO3A98