" But the question keeps staring you right in the face. You think about individuality for example, who you are. Who you are is mostly a matter of the free choices that you make. Or take responsibility. You can only be held responsible, you can only be found guilty, or you can only be admired or respected for things you did of your own free will. So the question keeps coming back, and we don't really have a solution to it. It starts to look like all our decisions are really just a charade.
Think about how it happens. There's some electrical activity in your brain. Your neurons fire. They send a signal down into your nervous system. It passes along down into your muscle fibers. They twitch. You might, say, reach out your arm. It looks like it's a free action on your part, but every one of those - every part of that process is actually governed by physical law, chemical laws, electrical laws, and so on.
So now it just looks like the big bang set up the initial conditions, and the whole rest of human history, and even before, is really just the playing out of subatomic particles according to these basic fundamental physical laws. We think we're special. We think we have some kind of special dignity, but that now comes under threat. I mean, that's really challenged by this picture."
-Chapter 6 - Free Will and Physics