Full Idea
The older metaphysics has the naïve presupposition that thinking grasps what things are in-themselves, that things only are what they genuinely are when they are captured in thought.
Gist of Idea
Older metaphysics naively assumed that thought grasped things in themselves
Source
Georg W.F.Hegel (Logic (Encyclopedia I) [1817], §28 Add)
Book Reference
Hegel,Georg W.F.: 'The Hegel Reader', ed/tr. Houlgate,Stephen [Blackwell 1998], p.144
A Reaction
His 'older' metaphysics is prior to Kant's critique. The less naïve version is more aware of antinomies and dialectical conflicts within thought.