人性中最深刻的原则是渴望被欣赏。
The deepest principle in human nature is the craving to be appreciated.
    ——杜先生晚年在香港,先生为中国抗战.赈灾慈善做出巨大贡献,晚年依旧气度过人,毁掉所有欠条。
One of my primary objects is to form the tools so the tools themselves shall fashion the work and give to every part its just proportion.