There should be no extremes in human conditions with respect to “wealth and sustenance”

One of Bahá'u'lláh's teachings is the adjustment of means of livelihood in human society. Under this adjustment there can be no extremes in human conditions as regards wealth and sustenance. For the community needs financier, farmer merchant and laborer just as an army must be composed of commander, officers and privates. All cannot be commanders; all cannot be officers or privates. Each in his station in the social fabric must be competent; each in his function according to ability; but justness of opportunity for all. ('Abdu'l-Baha, 'Foundations of World Unity')