… is from pages 10-11 of the 1998 Liberty Fund edition of the late Anthony de Jasay’s great 1985 book, The State (emphasis added):
Very few of the countless inequalities people are likely to resent lend themselves to levelling, even when the attack on difference is as forthright as Mao’s Cultural Revolution. It is no use making everyone eat, dress, and work alike if one is still luckier in love than the other. The source of envy is the envious character, not some manageable handful out of a countless multitude of inequalities.