最根本的道理往往是最简单的，但其衍化出来的现象却非常复杂。
Positive psychology is as concerned with strength as with weakness, as interested in building the best things in life as in repairing the worst.
It’s on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.
有时沉默比言语更有力。