…is from Chapter 3 of Frederic Bastiat’s final work Economic Harmonies (page 499 of the Mises Institute Edition):
Can we concieve a time when man can no longer form even reasonable desires? Let us not forget that a desire that might be unreasonable in a former state of civilization–at a time when all the human faculties were absorbed in providing for low material wants–ceases to be so when improvement opens to these faculties a more extended field. A desire to travel at the rate of thirty miles per hour would have been unreasonable two centuries ago–it is not so at the present day [or 70mph in Bastiat’s time! -JMM]. To pretend that the wants and desires of man are fixed and stationary quantities, is to mistake the nature of the human soul, to deny facts, and to render civilization inexplicable.
JMM: What we take for granted were once unobtainable wants because we had to focus on growing food. As that food was automated (thus destroying a lot of farmer jobs) and became cheaper and taken for granted, more desires, once unobtainable, became obtainable. Desires like kitchen appliances, faster transportation, recorded music, etc. Then, as more of those desires became taken for granted and cheap (displacing lots of manufacturing jobs), we moved to other desires, like better health, better medicine, more diversions (theatre, movies, sports, TVs, etc).
Shift happens, but it happens because desires are being met, which in turn allows new desires to come about. Human desires are indefinite.