Ah. "Human being". Very well. We can assume, merely for the purposes of this discussion that the term "human being" indicates a group of intelligent or at least semi-intelligent hominids of the genus Homo Sapiens on the little planet you call Earth. Those hominids would appear to be of several different races or colors, but they share certain basic characteristics. They are bipeds. They are more advanced than anthropoid apes. They form what are termed civilizations, usually making use of the written word (but not always) and the spoken word. They usually wear some sort of clothing and use a variety of manufactured tools.

Is this clear?