Yes, for literalists, the heart is the pump that keeps the blood flowing.
But for those who grasp the reality and meaning of the centering and governing influence of the thalamus and hypothalamus at the center of the brain's cerebral-limbic system, about which historic literary figurative allegory and metaphor have shown to refer, recognize that the word heart has a greater meaning that is relevant to the matter at hand.
We are conceived and develop, hopefully, and without damaging intervention, to be as "designed", so to speak.
That design is reflected in our true moral code as the nature of the human heart.
If we assigne a value of "good" to the true moral code, then we can apply the value of "good" to our natural designed state.
Neutral ... may be an objectivist myth.
Hmmm ... an interesting statement ... but the large global generality of this statement begs for more detail, just for the fun of seeing what's really there.
From Darwin's lips to your ears? 
