Animals eat and humans eat. Animals sleep and humans sleep. Animals mate and humans mate. Animals defend and fight and so do humans. But human beings also possess the faculty for enquiring into and understanding the Absolute Truth. Humans have a faculty for spiritual growth. Humans can ask, "Who am I? What is the purpose of my existence?" If we utilize this faculty for spiritual realization then we are truly human beings. If we don't, if we simply concern ourselves with eating, sleeping, sex and fighting, then are we not human in name only?