Abstract
This work attempts to develop a workable formal theory of coherence that avoids the objections traditionally advanced against the earliest versions of the theory. Basically it construes the coherence theory as a criterial rather than definitional approach to truth, i.e., as furnishing a criterion rather than a definition of truth. The problem of criterion is seen as a problem not of guaranteeing but of authorizing criterion. Coherence is a criterion applying to a set of propositions that satisfies the conditions of consistency and connectiveness of the systemic sort. A detailed logical machinery is developed. The pivotal concept is the notion of data as a truth-candidate, "a proposition to be taken not as true, but as potentially or presumptively true."