除非有勇气远离海岸，否则你永远游不到新的地平线。
You cannot swim for new horizons until you have courage to lose sight of the shore.
The sea is everything. It covers seven tenths of the terrestrial globe. Its breath is pure and healthy. It is an immense desert, where man is never lonely, for he feels life stirring on all sides.
If you are ever in trouble, don’t try to be brave, just run away.
世界是残酷的，我的书反映了这一点。
成功辨识的关键是找到一个足够灵活的模型结构，以捕捉系统的基本特征，同时又足够简单，可以从现有数据中估计出来。
The true measure of success is not just profitability, but the positive impact we leave for future generations.