上句见：Day350
The Story of Philosophy《哲学的故事》第1章Plato第7节VI. The Psychological Solution第4段第3句：

But mere athletics and gymnastics would make a man too one-sided. "How shall we find a gentle nature which has also great courage? — for they seem to be inconsistent with each other"(375). We do not want a nation of prize-fighters and weight-lifters. Perhaps music will solve our problem: through music the soul learns harmony and rhythm, and even a disposition to justice; for "can he who is harmoniously constituted ever be unjust? Is not this, Glaucoma, why musical training is so powerful, because rhythm and harmony find their way into the secret places of the soul, bearing grace in their movements and making the soul grateful?"(401; Protagoras, 326). Music moulds character, and therefore shares in determining social and political issues. "Damon tells me — and I can quite believe it —that when modes of music change, the fundamental laws of the state change with them."15
15Cf. Daniel O'Connell: "Let me write the songs of a nation, and I care not who makes its laws."
浙江大学译本：我们的国家不能只有职业拳击手和举重运动员。

解析

1、We do not want a nation of prize-fighters and weight-lifters.
我们不需要一个由是职业拳击手和举重运动员组成的国家。
prize-fighter: a person who engaged in a public boxing match.拳击手
After that they wished to fly airplanes, or be prizefighters, or preachers or dancers. 在那之后，他们希望去驾驶飞机或成名职业拳击手或成为名传教士或成为名舞者。《心是孤独的猎手》
weight-lifter: someone who lifts heavy weights as a sport举重运动员
Compared to us, ants and dung beetles and nature's other miniature weightlifters are special because they pull off their amazing feats of strength without bones.与我们相比，蚂蚁、蟑螂以及自然界的其它微型“举重健将”很特别，因为它们不用骨骼就能完成令人惊叹的力量壮举。《PBS趣味科普》

这句进一步说明人的片面导致国家的片面。同时，这句还押了尾韵。柏拉图那年代有这两个职业吗？虽然没有，但有类似的项目。在古希腊，拳击被列为古代奥运会的比赛项目之一，有专门的拳击手参与竞技。而举重，当时的人们会通过举起一些重物来展示自己的力量，已经存在一些力量著称的人。