The flesh is sad, alas, and I have read all the books.
Success is not accidental, it requires persistence and hard work.
Poetry should be as sharp as a sword.
释义：善于用兵的人，会顺应天地的规律，与之同行。这句话强调用兵之道在于顺应自然。
人类思维能够理解宇宙，因为它是宇宙的一部分。