Full Idea
God is the being in which existence cannot be separated from essence and concept and which cannot be thought except as existing.
Gist of Idea
God's existence cannot be separated from essence and concept, which can only be thought as existing
Source
Ludwig Feuerbach (Principles of Philosophy of the Future [1843], §18)
Book Reference
Feuerbach,Ludwig: 'Principles of the Philosophy of the Future', ed/tr. Vogel,M [Hackett 1986], p.30
A Reaction
This shows how faith in God endured through the Idealist movement by means of the Ontological Argument, despite the criticisms of Hume and Kant. To me this now appears as an odd abberation in the history of human thought.