世界是一本书，不旅行的人只读了一页。
The world is a book, and those who don’t travel read only one page.
文章以气势为主，气势的清新或浑浊有其内在规律，不能勉强达到。
明智地思考却愚蠢地行动，这是人性。
A proof that P = NP would have profound implications for mathematics, cryptography, and algorithm design.