Monumental book. It definitely opened up new mental doors for me.

It is rare to find such a generous book these days.

For being non-fiction the thread is clear and captivating. You peel each layer of behavior (from the brain signals all the way to your culture). The last few chapters, the author makes observations and social commentary with strong ideas.
The one that struck me the most is that after understanding how much all the biological factors play into our behavior (you have to read the book), do we still have free will? is it still fair to shame and guilt-trip people for their shortfalls? The whole notion of “punishment” is re-examined and questioned.