The whole trouble in the lives of people, in their houses, in the nation and everywhere, is always their incapacity of renunciation. If civilization can be explained, it is only a developed sense of renunciation which manifests itself in consideration for each other. Every act of courtesy, of politeness shows renunciation. When a person offers his seat to another, or when he offers something that is good, it is renunciation. Civilization in its real sense is renunciation.