数学是给不同事物起相同名字的艺术。
Mathematics is the art of giving the same name to different things.
In man-machine symbiosis, it is man who must adjust: The machines can't.
不在于你有多想要它,而在于你愿意为它付出多少努力。
Though debts are condemned in the financial world, the world of friendship and love may perversely depend on well-managed debts.