The One Thing : The Surprisingly Simple Truth Behind Extraordinary Results: Achieve your goals with one of the world's bestselling success books (Paperback) - 『원씽』원서
The Daily Stoic : 366 Meditations on Wisdom, Perseverance, and the Art of Living: Featuring new translations of Seneca, Epictetus, and Marcus Aurelius (Paperback, Main) - '데일리 필로소피' 원서