It is beyond human comprehension to understand the
essence of such spiritual qualities as total altruism and love.
Even the existence of such feelings is beyond our
comprehension; we seem to require an incentive to perform
any act that does not promise us some form of personal gain.
That is why a quality such as altruism can only be imparted
to us from Above, and only those of us who have experienced
it can understand it.
Rabbi Michael Laitman