 As a logician, Heytesbury strongly influenced logic in fourteenth and fifteenth-century Britain, and there is a notable fifteenth and early sixteenth-century reception in Italy where multiple editions of his commentaries on [RSS] and [SCD] were printed (Ashworth &amp; Spade 1992; de Rijk 1975, 1977). Despite his dismissive attitude toward this genre, Heytesbury’s treatise is one of the most influential late medieval texts. These influences include the British logical tradition (see Pironet 2008), the Italian logical  tradition,[48]  and John Mair’s  circle,[49]  and the treatise is referred to even as late as 1688 (De Benedictis 1688: 580–590; for other influence, see Spade 1989: 273). Heytesbury’s catalogue of solutions to the paradoxes, where the positions are (correctly or not) attributed to fourteenth-century British logicians, is further developed and sometimes defended against Heytesbury’s harsh and sarcastic dismissal. (R2.2) is developed by extending the proof and supplemented by saying that paradoxical sentences (or all sentences, for that matter) signify their own truth. Furthermore, Heytesbury’s contribution to epistemic logic in the second chapter of [RSS] appears to have sparked further debate in the upcoming centuries, as documented by the fourteenth and fifteenth-century development of the British and Italian treatises de scire et dubitare which typically revolved around the sophisms formulated by Heytesbury and where Heytesbury’s position was among those which were discussed, sometimes with an explicit attribution to Heytesbury (Boh 1993 and Hanke 2018a and 2018b). As a philosopher, Heytesbury significantly influenced later Oxford Calculators: John Dumbleton, anonymous author of the Tractatus de sex inconvenientibus, Richard Swineshead, author of one of the most famous treatises Liber Calculationum, and continental fourteenth and fifteenth-century philosophers, e.g., John Casali, John of Holland, Petrus of Mantua, Cajetan of Thiene, Giovanni Marliani, and Paul of Venice (see Wilson 1956: 25–28, Rommevaux 2017: 154–160, Jung, Podkoński 2020: 130–31, 148–149, 151). The Middle Degree Theorem was widely discussed during the fourteenth and fifteenth centuries, and later played an important role in the formulation of the law of free fall (see Damerow et al. 1992: 161–200, esp. 232–236).