Books like On the Kabbalah and Its Symbolism
Gershom Scholem
On the Kabbalah and Its Symbolism is 230 pages, about 4 hours 13 minutes at 250 words a minute.
12 books to read next
How long each takes
Night 2.5 h 
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Kabbalah 3.6 h 
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I and Thou 2.5 h 
Everyman's Talmud 7.5 h 
Talmud La-kol 5.4 h 
Kabbalah 5.5 h 
Sigmund Freud and the Jewish Mystical Tradition 6.0 h 
The Dyke and the Dybbuk 4.6 h 
Sepher Rezial Hemelach 5.5 h Bar height shows length. Estimated at 250 words a minute.