The breakthrough that Eckhart attains through his theory of univocal causality is exemplified by the relation between thinking and thought. For Eckhart, thinking presupposes no origin because a presupposed origin could only be thought by thinking and hence would be a thought of thinking, that is, itself thinking. Thinking is, then, for itself a presuppositionless origin, that is, it is its own principle: principium (Echardus, In Ioh. n. 38; LW III, 32, 11: “… ipsum principium semper est intellec