Full Idea
Hegel rejected the fundamental Kantian distinction between how things knowably appear and how they unknowably are in themselves. This was anathema to him. For Hegel how things knowably appear is how they manifestly are.
Gist of Idea
Hegel, unlike Kant, said how things appear is the same as how things are
Source
report of Georg W.F.Hegel (Science of Logic [1816]) by A.W. Moore - The Evolution of Modern Metaphysics 07.2
Book Reference
Moore,A.W.: 'The Evolution of Modern Metaphysics' [CUP 2013], p.165
A Reaction
We shouldn't assume that Hegel was therefore a realist, because Berkeley would agree with this idea. Hegel rejected transcendental idealism for this reason. Hegel wanted to get rid of the immanent/transcendent distinction
Related Idea
Idea 21973 Fichte believed in things-in-themselves [Fichte, by Moore,AW]