Quality is never an accident; it is always the result of intelligent effort.
质量从来不是偶然的；它始终是智慧努力的结果。
A writer is, after all, only half his book. The other half is the reader and from the reader the writer learns.
置身于是非之外，评断是非才能客观；置身于利害之外，才能看清利害的变化。
老时相信一切，中年怀疑一切，青年知道一切。