All wealth is the product of labor.
"The world is a book, and those who do not travel read only one page."
The essence of mathematics lies in its freedom.
伊卡洛斯的翅膀或许并不遥远。与其害怕失败的可能,我宁愿飞翔然后坠落。
I profess both to learn and to teach anatomy, not from books but from dissections.