50本哲学经典
50 Philosophy Classics: Thinking, Being, Acting, Seeing, Profound Insights and Powerful Thinking from Fifty Key Books
译言古登堡计划50本灵修经典
50 Spiritual Classics: Timeless Wisdom from 50 Great Books on Inner Discovery, Enlightenment and Purpose
译言古登堡计划50本自助经典
50 Self-Help Classics: 50 Inspirational Books to Transform Your Life from Timeless Sages to Contemporary Gurus
译言古登堡计划