Microcast: William Blake, Newton and Angels

This is an excerpt from an episode of the South Bank Show on Blake originally broadcast in 1995. Watch the full documentary here: https://youtu.be/Qvx0on0Hj2IThe image being discussed is Blake's painting of Newton from 1795: https://en.wikipedia.org/wiki/Newton_(Blake)#/media/File:Newton-WilliamBlake.jpg