Ralph Abraham was always looking for the big picture

I first learned about Ralph Abraham through the "Trialogues", a video series recorded with Rupert Sheldrake and Terence McKenna. He struck me as brilliant.

https://youtu.be/JV7vuNo3dCI?feature=shared

Quite the legend. He maintained a website and the full text of his 1996 book is there ("Chaos in Discrete Dynamical Systems: A Visual Introduction in 2 Dimensions", by Ralph Abraham, Laura Gardini, and Christian Mira):

http://www.visual-chaos.org/jpx/