Full Idea
Confucius was deeply religious in a traditional sense, showing reverence towards heaven and an omnipresent spiritual world, but he was cool towards the supernatural, and does not seem to have believed in either a personal god or an afterlife.
Gist of Idea
Confucius revered the spiritual world, but not the supernatural, or a personal god, or the afterlife
Source
Peter Watson (Ideas [2005], Ch.05)
Book Reference
Watson,Peter: 'Ideas: from fire to Freud' [Phoenix 2006], p.161
A Reaction
The implication is that the spiritual world was very remote from us, and beyond communication. Sounds like deism.