To which I say 'no there aren't'. But obviously there is no 'I' that is saying 'there are no ghosts': there is no independent 'me' listening to a rationalistic other-me (imagine it sitting on my shoulder like a little Richard Dawkins with a harp). In fact, when I stop to think about it, what is there? A stream of phenomena, that pass through consciousness. That's all there is, there is no me, that's the real 'hard line'.
And I suppose the mutual undermining of those two tendencies - rational judgement and bewildered perception - is what allows me to preserve a third set of beliefs, inconsistent with either of the previous two points of view: for example that we live in an ocean of being, where there might be ghosts or reincarnation (or anything).
I wouldn't like to prioritise any one of these three perspectives, and say that was what I really believed.