Behave

Why it’s on the list: Sapolsky explains a single behaviour by widening the frame one step at a time — the second before, the hour, the adolescence, the culture, the millennia of evolution — until the question of what caused it has no clean answer left. The best available synthesis of the biology-of-behaviour literature, and the setup for his later argument against free will.

Where I heard about it

• Spotted at Bookshop Santa Cruz — November 2020 (Books photo album)

• Spotted at Heathrow Airport — December 2023 (Books photo album)

• Replies to @SpencrGreenberg — listed as “Behave by Sapolsky” in the replies to his question “What non-fiction book taught you the most about how the world (or how humanity or society) really works?”, June 2025. The full set of replies lives on A question for you — What non-fiction… (tweet).

Connections

• Neuroscience — the core of the material.
• Free Will · Determinism — where Sapolsky’s layered causation leads.
• Psychology
• The Elephant in the Brain — the signalling account of the same behaviour, named in the same thread.
• A question for you — What non-fiction… (tweet) — the thread this recommendation came from.