Start with high-confidence religion & philosophy books, then narrow by subgenre or adjacent topics.
The Secret of the Golden Flower
Richard Wilhelm, C. G. Jung
New Seeds of Contemplation
Thomas Merton, Sue Monk Kidd
The Pagan Writes Back
Zhange Ni
Guide to Thomas Aquinas
Josef Pieper
An Introduction to Biblical Ethics
David W. Jones, Daniel Heimbach
The Path
Michael Puett, Christine Gross-Loh
Dialogues Concerning Natural Religion
David Hume
Isis Unveiled
Helena Petrovna Blavatsky
The Greatest Thing in the World and Other Addresses
Henry Drummond
The Yoga Sutras of Patanjali
Patañjali
The Hatata Inquiries
Zara Yaqob, Walda Heywat
Sickness Unto Death
Søren Kierkegaard
Søren Kierkegaard, Sren K
Art of Worldly Wisdom
Baltasar Gracián
