 Since Wyclif thought of substance as the ultimate substrate of existence and subject of predication in relation to anything else, the only way to demonstrate the reality of the items belonging to other categories was to conceive of them as forms and attributes of substance. Accordingly, he insists that quantity, quality, and relations, considered as accidents, are forms inherent in the composite substances (cf. De ente praedicamentali, ch. 6, p. 48). In this way, just like Walter Burley, Wyclif wanted to safeguard the reality of accidents as well as their (real) distinction from substance and from each other, while at the same time affirming their dependence on substance in existence. 