悲伤只是无处安放的爱。
Grief is just love with no place to go.
The best way to learn econometrics is by doing—working with real data and real problems.
In matters of style, swim with the current; in matters of principle, stand like a rock.
The world is so unhappy because it is ignorant of the true self. Man's real nature is happiness. Happiness is inborn in the true self. Man's search for happiness is an unconscious search for his true self.