Francisco Varela
en.wikipedia.org
en.wikipedia.org
»Varela's 1991 book The Embodied Mind: Cognitive Science and Human Experience, co-authored with Evan Thompson and Eleanor Rosch, is considered a classic in the field of cognitive science, offering pioneering phenomenological connections and introducing the Buddhism-informed enactivist and embodied cognition approach. A revised edition of The Embodied Mind was published in 2017, featuring substantive introductions by the surviving authors, as well as a preface by Jon Kabat-Zinn.«
'The Embodied Mind' can be borrowed at https://archive.org/details/embodiedmindcogn0000vare
The ideas behind interoception and their connection to emotion and thought helped me put start taking this space more seriously.
Many people will also cite "The Body Keeps the Score", which is really focused on trauma and therapy rather than theory.
Less often recommended, this book shaped a lot of my thinking: https://www.amazon.com/Tree-Knowledge-Biological-Roots-Under...
Edit: https://en.wikipedia.org/wiki/Autopoiesis https://en.wikipedia.org/wiki/Coevolution
A deep rabbit hole which started for me when I read Paul Watzlawick in the late 90s.
(the German Wikipedia article about it is much more detailed than the English one; I guess it's good to read using machine translation)
I always suspect Varela gave us some true keys to unlock the mysteries unsolved about AGI.