This paper shows how Wyclif is able at the same time to claim that whatever is is a proposition and to develop a nontrivial theory of propositional truth and falsity. The study has two parts: 1) Starting from Wyclif's fivefold propositional typology – including a propositio realis and asic esse sicut propositio significat – we will analyse the three different kinds of real predication, the distinction between primary and secondary signification of propositions and the status of logical truth as opposed (...) to metaphysical truth. Furthermore, the notion of ens logicum will be compared to Walter Burley's propositio in re of which it appears to be a close analogon. 2) The second part deals with two semantic and metaphysical implications of the "pan-propositionalism": the extended notion of being called upon to explain the truth of so-called non-standard propositions and the relation between contents of the divine mind as "arch-truth-makers" and eternal as well as contingent truths. (shrink)