I had the privilege of participating in a conversation with my friend Robyn Wrigley-Carr, who has edited a new Advent collection by Evelyn Underhill, The Music of Eternity. A video of our conversation is posted here: https://homegroups.org.uk/series/music-of-eternity/session/music-of-eternity-session-seven/
The interview is part of a nice little curriculum for use with home study groups.
Of course you can learn more about Underhill at evelynunderhill.org