sneaking eggs into strangers’ nests. Kindness is kindness only if it is meant to be
so. Of course the brain is an evolved organ. But psychological altruism, the kind
we talk about when we are thinking of human affairs, is entirely independent from
biological altruism, or the kind that confers fitness on its bearer. Here is a quick
illustration: Helping an elderly lady across the street can hardly affect her fitness,
since at her age she will not be having any more children. On the other hand,
selfishly snubbing a young girl waiting in line to buy an ice cream might
lead—who knows?—to her decision to have children who will exact revenge on
you someday.
In The Theory of Moral Sentiments, Adam Smith softened up a little. “Man
possesses the capacities,” he wrote, “which interest him in the fortune of others,
and render their happiness necessary to him, though he derives nothing from it,
except the pleasure of seeing it.”
15
Both biological determinists and those who
think our evolved natures have nothing to do with our behavior would do well to
pay careful attention to the words of the seventeenth-century Edinburgh
economist: We are blessed with many gifts. What we do with them is our
challenge, for together with kindness we were also given the capacities for
cruelty, malice, nonsensicalness, and even boredom. Clearly, if our genetic
endowments provide the foundation for both ethical and unethical action, then our
moral lives are up to ourselves.
There can be no doubt that social life in Nature put into place the substrates that
would one day allow the birth in humans of something we call our moral sense:
the policing against cheaters, the mechanism for conflict resolution, and the
capacities for empathy, shame, jealousy, sympathy, and rage are all stages on this
wondrous evolutionary journey. This same journey also saw the laying down of
the basic needs and compulsions of our species: the dependence of young on care,
the interdependence of being part of a group, striving for status, sexual desire,
motherly instinct, and of course the survival instinct itself. These basic
compulsions and necessities are not infinitely pliable, nor should our moral sense
ignore them. The fact that goodness may have natural origins—“the so-called
moral sense is aboriginally derived from the social instincts,” Darwin wrote—can
be made to be confusing and coarsening. In the wrong hands it tends to produce a
mentality that discounts what is not utilitarian in the biological sense.
But if the dramatic tale of attempts to crack the biological mystery of altruism
teaches us anything it is that we need to do our best to resist this kind of scientistic
“originalism.” From Kropotkin, who thought men should return to the animal
state, to Huxley, who implored that they shouldn’t; from Emerson, to whom
human life was akin to a termite mound, to Fisher’s genes doing God’s work on
earth; from Wynne-Edwards’s procreation-forsaking birds instructing about
traffic jams to Haldane’s genetics bolstering Soviet Marxism—everyone would
have been better off for recognizing this.
16
Yes, by all means, natural dispositions
play a part in our decision-making process. The brain really is an evolved organ,