In mathematics, the art of proposing a question must be held of higher value than solving it.
在数学中，提出问题的艺术必须比解决问题更有价值。
译文：与人说话，都是在为自己积德，和妻子和孩子相处也就是修身养性。赏析：会说话的人懂得如何说话，从而不会得罪人，自然就是积德。反之，那些口无遮拦之人，处处在伤害他人，处处在树敌，其结果会给自己带去祸害的。
Happiness is not something that happens. It is not the result of good fortune or random chance. It is not something that money can buy or power command. It depends not on what happens outside of you, but on what happens inside of you.
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。
I never stop learning and improving.