Life is like a three-story house, the first floor is material, the second floor is spirit, and the third floor is soul. Most people in the world live on the first floor and are busy with luxury and luxury all their lives. Scholars, artists and other few people refuse to be instinctive slaves, that is, concentrate on academic culture. A few people are not satisfied with the second floor, so they climb the third floor to explore the truth of life.

-Feng Zikai