You who prattle that morality is social and that man would need no morality on
a desert island—it is on a desert island that he would need it most. Let him
try to claim, when there are no victims to pay for it, that a rock is a house,
that sand is clothing, that food will drop into his mouth without cause or
effort, that he will collect a harvest tomorrow by devouring his stock seed
today—and reality will wipe him out, as he deserves; reality will show him
that life is a value to be bought and that thinking is the only coin noble
enough to buy it.