Rav Kook wrote a wonderful sefer of drashos that he gave in his earlier years called מדבר שור. Midbar Shur is a place mentioned in Chumash and an allusion to the Rav's name. "Shur" means to see and Kook in Yiddish means to see. Speaks [Midaber] The One Who Sees [Rav Kook].
Unfortunately, the manuscript was STOLEN from his son Rav Tzvi Yehuda. He didn't want to make a big deal out of it because he assumed that it was a Talmid Chochom. Eventually, it was surreptitiously [which is a GREAT opportunity to use that wonderful Scrabble word] returned.
For many years it lay dormant until one night close to the end of Rav Tzvi Yehuda's life, when he had a dream and his father appeared to him and told him to publish the manuscript. [Related in the Itturei Kohanim journal].
Here is the wonderful result.
It is not written in Rav Kook's famous poetic style but in a more traditional Rabbinic style. But still sui generis.