In mathematics, the art of proposing a question must be held of higher value than solving it.
聪明的投资是价值投资,获得的比你付出的更多。
养儿子不教育和养驴没有什么区别,养女儿不教育也和养猪没什么区别;妻子如果贤惠,丈夫就少遭祸患,儿子如果孝顺,父亲就心情舒畅。