Are each of us a "human being", as the Native Americans once distinguished between those who were spiritually aware and those who were not, or simply an "animal"?
 
The following 3 quotes, by 3 great thinkers on the essence of what makes us trully human (conscience, morality/ethics, and free will in the present), will tell you. 
 
Think.  Who are each of us really?  Are we human or just animals in a man or woman's body?  The answer lies not in corpse, or the mind, but in our very soul.
 
"The worst condition a human being can fall into is lack of conscience." - Jean Cassou, The ethics of individual responsibility
 
"It is not who is right, but what is right, that is of importance." - Thomas Huxley
 
"The beginning is always today." - Mary Wollstonecraft

 

...And do remember, it is the existence of a conscience that makes us human, but there are good and evil human beings, but there is only one kind of animal....spiritually and morally unaware...hopeless.

 

I wonder which is worse?  The evil person or the morally deluded and lost.