I would say that I do not believe in ghosts, but...
I most definitely do not believe in ghosts, and yet....
Nine years ago, my congregation was rebuilding its synagogue. For a while, we had Friday evening services in a nearby Episcopal church. Not many people came to those services; we usually had barely a minyan (ten people). One of those who did come was a woman about my age whom I'll call Deborah. Deborah was, among other things, a poet and a teacher. She suffered from a genetic condition that stunted her growth. She was only about 4'7" tall, if that.
One Friday evening in early spring, Deborah came to services, went home, and died. She was alone.
The following Friday evening, we were chanting
L'kha dodi, the song to greet the Sabbath Bride. I saw three people come in the door. There was a married couple, and just behind them, came a short person. All I could see was the silhouette of the crown of her head. "It's Deborah," I thought to myself. And then, instantly, I knew that it could not possibly be Deborah. And an instant after that, I saw that there was no one there behind the couple.
Even now, I can still most definitely remember seeing
someone there. And, every time I go to Friday evening services and chant
L'kha dodi, I think of Deborah.
I still don't believe in ghosts.