On the philosophers, Folly delights in cataloguing the subtle abstractions of the scholastics. All the terms listed here were used in the context of disputes about universal ideas behind which in fact were hidden totally different views about man. Generally Platonist psychological presuppositions led to the view either that universal concepts like 'tree-ness' were merely words with nothing to correspond to them in reality or that actual things were modifications of realized 'universal' ideas. Both solutions entailed theological difficulties, and there developed a more Aristotelian epistemology in which the universal concept was 'abstracted' from a perception by a process which always remained obscure.