There is one final observation to be made. Homo economicus by no means represents the worst imaginable character for the social drama. The natural monopolist whose predilection towards the ‘ small is beautiful’ philosophy leads him to produce less output than would be profit-maximising inflicts yet larger marginal losses on the community than his rapacious wealth-maximising counterpart. The political zealot who works with self-sacrificing conscientiousness to pursue some ideological goal – such as the purification of the race, or securing the world for Islam – can cause much greater harm than the mere budget-maximiser.
Brennan and Buchanan, Predictive Power and the Choice among Regimes, pp. 103-104.