"One-Third Discount" is an exciting novel by the famous American writer Irwin S. Cobb. The book tells the story of a group of friends who decided to give a third of their lives to help others and experience the joy of giving. This book not only reveals the theme of kindness and selflessness, but also emphasizes the importance of friendship and mutual help. Irwin Cobb successfully combined deep philosophical considerations with humor and intrigue, creating a work that will remain in the heart of the reader for a long time.