Several of these essays have been printed whole in journals; others are in varying degrees new. Two main themes run through them. One is the problem of meaning, particularly as involved in the notion of an analytic statement. The other is the notion of ontological, commitment, particularly as involved in the problem of universals.

Whether aristotle wrote a work on mathematics as he did on physics is not known, and sources differ. this book attempts to present the main features of aristotle's philosophy of mathematics. methodologically, the presentation is based on aristotle's "posterior analytics", which discusses the nature of scientific knowledge and procedure. concerning aristotle's views on mathematics in particular, they are presented with the support of numerous references to his extant works. his criticism of his predecessors is added at the end.

Im vorliegenden Buch stellt Klaus Oehler die Lehre vom noetischen und dianoetischen Denken bei Platon und Aristoteles dar und begründet damit erstmals die These, dass das für die neuzeitliche Philosophie zentrale Problem der Reflexion und des Selbstbewusstseins schon, wenn auch nicht in gleicher Weise, in der antiken Philosophie eine Rolle gespielt hat.