The “economic motive,” writes Hayek in The Road to Serfdom, is “the desire for power to achieve unspecified ends.” Money, he adds, is “the medium through which a force [the economic motive] makes itself felt.”

Also, while we’re on the subject of Nietzsche and Hayek, there’s this:

Nietzsche: “When a worker says to a wealthy manufacturer, ‘you do not deserve your happiness,’ he is correct; his conclusions from that, however, are false. No one deserves his happiness, no one his unhappiness.”

Hayek: “In a free system it is neither desirable nor practicable that material rewards should be made generally to correspond to what men recognize as merit…it is an essential characteristic of a free society that an individual’s position should not necessarily depend on the views that his fellows hold about the merit he has acquired….the value which a person’s capacities or serves have for us and for which he is recompensed has little relation to anything that we can call moral merit or deserts.”