What can be shown, cannot be said.
一个想法只有执行得好才算好。
译文：年轻时总觉得做人非常容易，长大后才知道创家立业的艰难。赏析：我们不经历社会的磨炼和捶打，是不会明白人世的艰难。当我们把生活的酸甜苦辣咸都尝遍，才会懂得人生的百般滋味。
A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.
The future of dairy lies in balancing tradition with cutting-edge science to meet global needs.
在面向听众讲话时，将目光固定在几个人身上比将目光 "扫射 "到整个房间更好。你的眼睛会向别人传达你是否相信自己说的话。