There's very little about being in a functional-M.R.I. scanner that is natural: you are flat on your back, absolutely still, with your head immobilized by pillows and straps. The scanner makes a dreadful din, which headphones barely muffle.

When a trait is universal, evolutionary biologists look for a genetic explanation and wonder how that gene or genes might enhance survival or reproductive success.

Angels, demons, spirits, wizards, gods and witches have peppered folk religions since mankind first started telling stories.

Robin Marantz Henig Quotes