Those who are hungry have no need of an elaborate philosophy to stimulate or excuse discontent, and anything of the kind appears to them merely an amusement of the idle rich.
 Bertrand Russell, A History of Western Philosophy (1945). copy citation

Context

“To most of us, his verse seems often poor and his sentiment often tawdry, but abroad his way of feeling and his outlook on life were transmitted and developed and transmuted until they became so wide-spread as to be factors in great events. The aristocratic rebel, of whom Byron was in his day the exemplar, is a very different type from the leader of a peasant or proletarian revolt. Those who are hungry have no need of an elaborate philosophy to stimulate or excuse discontent, and anything of the kind appears to them merely an amusement of the idle rich. They want what others have, not some intangible and metaphysical good. Though they may preach Christian love, as the medieval communist rebels did, their real reasons for doing so are very simple: that the lack of it in the rich and powerful causes the sufferings of the poor, and that the presence of it among comrades in revolt is thought essential to success.” source