One never notices what has been done; one can only see what remains to be done.
人们永远不会注意到已经做了什么；人们只能看到还有待完成的事情。
In every book, there is a piece of the author's soul.
Psychology must be a guide to practical living.
歌唱90%在于倾听。你也必须倾听寂静。
只有掌握核心技术，才能掌握自己的命运。