 The infinitist might reply that he does not run afoul of that principle, because the beliefs adduced in support of the initial beliefs are themselves justified by beliefs further down the chain. But what goes for the initial set of beliefs goes, it seems, for longer chains. If the appeal to a single unjustified belief cannot do any justificatory work of its own, why would appealing to a large number of unjustified beliefs do any better? Even leaving that problem aside, the infinitist, like the coherentist, maintains that justification can arise merely in virtue of relations among beliefs. Infinitists will then have to respond to many of the same objections that are leveled against coherentism—in particular, they would have to respond to the isolation objection mentioned in the next section. (See Aikin 2011 and Klein 1999, 2007 for defenses of infinitism; and see Turri &amp; Klein 2014; Aikin &amp; Peijnenburg 2014; and Peijnenburg &amp; Wenmackers 2014 for collections of essays which defend or criticize various forms of infinitism.)