Tao Te Ching by Lao Tzu (5 mentions) Atlas Shrugged by Ayn Rand (4) Sapiens by Yuval Noah Harari (4) Siddhartha by Hermann Hesse (4) The 4-Hour Workweek by Tim Ferriss (4) The Checklist Manifesto by Atul Gawande (4) Dune by Frank Herbert (3) Influence by Robert Cialdini (3)