Full Idea
It would not be unfair to say that Hegel's metaphysics consists of an ontological proof of the existence of everything.
Gist of Idea
Hegel gives an ontological proof of the existence of everything
Source
report of Georg W.F.Hegel (works [1812]) by Roger Scruton - Short History of Modern Philosophy Ch.12
Book Reference
Scruton,Roger: 'A Short History of Modern Philosophy' [ARK 1985], p.171
A Reaction
This is so gloriously far from David Hume that we must all find some appeal in it. The next question would be whether necessary existence has been proved. If so, given death, decay and entropy, what is it that has to exist? 2nd Law of Thermodynamics?