A material egalitarian might say, “Some are rich and some are poor, so we should try to be more equal.” In contrast, libertarians say, “The problem isn’t that some people have more; it’s that some people don’t have enough. The poor of the third world die of starvation and disease, not inequality.” Classical and neoclassical liberals are not material egalitarians, but are instead welfarists, sufficientarians, and/or prioritarians.

Jason Brennan, Libertarianism: what everyone needs to know, Oxford, 2012, p. 155