   For his own part, Russell often described his dissatisfaction with the dominant Idealist (and largely Monist) tradition as primarily having to do with the nature and existence of relations. In particular, Russell took issue with the claim found in Bradley and others, that the notion of a fundamental relation between two distinct entities is incoherent. Russell diagnosed this belief as stemming from a widespread logical doctrine to the effect that every proposition is logically of subject-predicate form. Russell was an ardent opponent of a position known as the “doctrine of internal relations”, which Russell stated as the view that “every relation is grounded in the natures of the related terms” (MTT, 139).  Perhaps most charitably interpreted (for other interpretations considered by Russell, see BReal, 87), this amounts to the claim that a’s bearing relation R to b is always reducible to properties held by a and b individually, or to a property held by the complex formed of a and b.