Behave : The Biology of Humans at Our Best and Worst

Robert M. Sapolsky

I remember Don Draper’s words from Mad Men – “When a man walks into a room, he brings his whole life with him. He has a million reasons for being anywhere, just ask him. If you listen, he’ll tell you how he got there.” Robert Sapolsky asks this to our behaviour, and tries to answer it using multiple disciplines of science. 

At any given point in time, we are behaving in one way or another. What influences that? To understand that, he travels back in time. From the seconds before that behaviour, and the possible neurobiological explanation, to the genes we have inherited, to the early days of our non-human ancestors and the environment that shaped many of their behaviours. Hormones, environment, culture, and events from millennia ago, all offer but clues to understanding how we are today. 

From a narrative point of view, you’re first thrown into the deep end of the pool. I found the first few chapters reasonably tough to get through, simply because between the names of neurotransmitters and hormones and their little quirks, I had to repeatedly go back and check if I had understood right (even if it’s a remote understanding!) It doesn’t help that there are footnotes on practically every page. I stopped reading them after a while. It also doesn’t help that each chapter is a rabbithole with multiple little sections.

And finally, I know the author means well and is probably trying to keep the prose conversational, but repeated “see what I did there?” are also a bit painful. As an exception, I did find the part on genes interesting, especially how it doesn’t act in isolation and interacts with the environment. ‘Genes aren’t about inevitabilities; they’re about potentials and vulnerabilities.’

Having said all that, once we have gotten out of the body, and moved into environment, culture, decision-making etc, the text is a lot more accessible and at least to me, supremely interesting. Behaviour and what goes into it indeed becomes fascinating as we start to see the behaviour of other species and how similar we are in some aspects. It is also awe-inspiring to behold the species we have become. And much of it purely by chance. Also mind-bending how biology affects our tendency to violence, our sense of justice and many other things whose behind-the scenes we don’t really look at. 
I think I’ll need at least one more read to assimilate everything in the book.

But it is indeed fascinating to know that ‘we are constantly being shaped by seemingly irrelevant stimuli, subliminal information, and internal forces we don’t know a thing about.’ ‘Our worst behaviours, once we condemn and punish are the products of our biology. The same applies to our best behaviours.’

It’s not the easiest read, but if you persist, a lot of insights await you.