Terence James Stannus Gray was a theatre producer who created the Cambridge Festival Theatre as an experimental theatre in Cambridge. He produced over 100 plays there between 1926 and 1933. Later in life, under the pen name Wei Wu Wei, he published several books on Taoist philosophy.
Quite an essential book in the Wei Wu Wei series. It covers a lot of ground around time, sentience, phenomenal reality, and other topics. It is quite a thick volume, hence it can be a challenge to get through. Worth the effort though, if WWW and pure nonduality (no nonsense) is your thing. Needless to say there is much direct pointing in the book, discussion on what previous 'sages' have said, and some very useful and amusing dialogues included.