“Religion is the belief in someone else’s experience. Spirituality is having your own experience.”I kinda like that.
I would also point out that Christianity is a religion but also deeply personal in that Jesus told Nicodemus three times that we must be born again. When I was born originally, it was a deeply meaningful and personalized experience for me. I even got a certificate officiating the occasion.
When I was born again, the same thing happened... again.