I am completely of the school that mind is entirely the manifestation of brain. So when there's a change in mind, there's got to be a neurobiological underpinning.

If we want to make sense of our behavior - all the best, worst, and everything in between - we're not going to get anywhere if we think it can all be explained with one thing, whether it's one part of the brain, one childhood experience, one hormone, one gene, or anything.

Show me one neuron that has some cellular semblance of free will. And there is no such neuron.

Robert Sapolsky Quotes