As I outline above, Sun, starting with the Principle of _people's livelihood_ and embodying the idea that _the world belongs to the public_, established the _San Min Chu I_. But just having a Principle won't do; a motive power is needed to fulfill it. That power is revolution.... Revolution is not an easy thing. It needs a very strong driving force to carry it out. What are the driving forces in the case of the Chinese revolution? They are wisdom, love, and courage. I wish to point out specially that the second factor is the most important. "Love" means, among other things: Save your country, even at the cost of your life! Let us define more fully the meanings of these three words. Wisdom means, how to understand Love. It also means: first, wide reading; second, care in your inquiries; third, careful thinking; fourth, the power of distinguishing right and wrong. By Love is meant loyalty, filial piety, faithfulness, and peace. Courage means the determination to do what is right. Besides, what is the most important is the need for persistence, without which nothing can be accomplished. When you have the virtues of Wisdom, Love and Courage and the persistence required, the next move is to start and work. Sun told us that it is hard to know and easy to do. If you study the _San Min Chu I_ carefully and yet don't do what is required of you, it is not because you can't do it, but because you won't do it. If you just won't do it, you are not a faithful disciple of the _San Min Chu I_. When you are to start the revolutionary work, you must have a Party, because in a Party all the revolutionary forces can be consolidated and all the revolutionary activities can be planned and directed.... [Footnote 17: [Chiang K'ai-shek], _San-min-chu-i chih T'i-hsi nai ch'i-shih Hsing-ch'êng-hsü_ (The _San Min Chu I_ System and its Method of Application), Chungking, 1939. This booklet is part of a series called _Conclusions of the Party Chief_, published by the Central Headquarters of the Kuomintang Training Corps, Chungking, 1939.]