 This conviction explains the main characteristic of his philosophical style, to which all his contributions can be traced back: a strong propensity towards hypostatisation. Wyclif methodically replaces logical and epistemological rules with ontological criteria and references. He thought of logic as turning on structural forms, independent of both their semantic contents and the mental acts by which they are grasped. It is through these forms that the network connecting the basic constituents of the world (individuals and universals, substances and accidents, concrete properties, like being-white, and abstract forms, like whiteness) is disclosed to us. His peculiar analysis of predication and his own formulation of the Scotistic formal distinction are logically necessary requirements of this philosophical approach. They are two absolute novelties in late medieval philosophy, and certainly the most important of Wyclif’s contributions to the thought of his times.