The only valid data for psychology are the reports of trained observers.

The best way to create interest in a subject is to render it worth knowing, which means to make the knowledge usable.

To dance,clap hands,exalt,shout,skip,roll on, float on

有疑问时，就说真话。

【讲解】：一个人的高尚的品质和外在的表现一致，然后才能成为君子。