Full Idea
Kant's idealism is a limited idealism - idealism based on the viewpoint of empiricism.
Gist of Idea
Kant's idealism is a limited idealism based on the viewpoint of empiricism
Source
report of Immanuel Kant (Critique of Pure Reason [1781]) by Ludwig Feuerbach - Principles of Philosophy of the Future §17
Book Reference
Feuerbach,Ludwig: 'Principles of the Philosophy of the Future', ed/tr. Vogel,M [Hackett 1986], p.28
A Reaction
This would place Kant as closer to Berkeley than to Hegel. Good for Kant, I say. He had the good sense to see that the crucial challenge to understanding is that offered by David Hume.