Every problem in mathematics is an opportunity to learn something new.
你把桃子投于我,我把李子回赠与你。桃子和李子价值相当,表明我本人是知恩图报的,也有互相赠送,礼尚往来的意思。
The success of every woman should be the inspiration to another. We should raise each other up.
预言是人类唯一一项无法由重复练习而进步的技术。
法律在其庄严的平等中,禁止富人和穷人在桥下睡觉、在街上乞讨和偷面包。