The title of the book Loosing the Spirits makes us ask: "Which spirits"? What are 'spirits"? "Spirit" is a concept that has had a long history in Judeo-Christian theology since Genesis begins with God's "Spirit" hovering over chaos to bring order. Christian theology therefore starts from the premise that God is not "corporal" but "of spirit." Spirit cannot be quantified in the same way as "bodied" entities. It implies something beyond the "natural" world, and therefore not "empirically" measurable; something 'supernatural." A Western rationalist and secular worldview is not naturally happy with the supernatural.