 Fichte’s account of the synthetic method provides Hegel with the key to moving beyond Kant. Fichte suggested that a synthetic concept that unifies the results of a dialectically-generated contradiction does not completely cancel the contradictory sides, but only limits them. As he said, in general, “[t]o limit something is to abolish its reality, not wholly, but in part only” (The Science of Knowledge, I: 108; Fichte 1982: 108). Instead of concluding, as a reductio ad absurdum requires, that the two sides of a contradiction must be dismissed altogether, the synthetic concept or judgment retroactively justifies the opposing sides by demonstrating their limit, by showing which part of reality they attach to and which they do not (The Science of Knowledge, I: 108–10; Fichte 1982: 108–9), or by determining in what respect and to what degree they are each true. For Hegel, as we saw (cf.  section 1),  later concepts and forms sublate—both cancel and preserve—earlier concepts and forms in the sense that they include earlier concepts and forms in their own definitions. From the point of view of the later concepts or forms, the earlier ones still have some validity, that is, they have a limited validity or truth defined by the higher-level concept or form.