未说出的往往比说出的更有力量。
The unsaid is often more powerful than the said.
"The key to innovation is diversity of thought."
The past is never truly past until it has been fully understood.
解释：君主对发生在堂上、堂下、门廷之内的事都不知道，则虽是近处，却比百里、千里、万里之外更远。