The best time to plant a tree was 20 years ago. The second best time is now.
临终前与诸同志谈话,1925年3月11日
Profit and sustainability must swim side by side, or both will sink.
我骨子里有一种倔强,绝不肯屈服于他人的意志。每当有人试图恐吓我,我的勇气就会增长。