译文 ：人的思想是随着身体气血的变化而变化的。四十岁之前具有奋发进取之心，这时虽然见识不多，但是敢于闯荡一番；到四十岁以后，人的心就逐渐稳定下来了，这时已经是见多识广，而且遇到事情都会斟酌一下；六十岁之后，人的思想就开始消极保守了，这时虽然见识广博，但是精力不够。虽然这种情况不一定适用于每个人，但大体上都是如此。古代人们四十岁做官，六七十岁告老还乡，大概是因为这个原因。当然，人们中间也有年纪轻轻却思想消极，无所事事的，无精打采的就像一个垂死之人；也有一些年老之人，性情狂躁，喜欢多事，但这些都不合乎常理。如果把那些遇事风风火火的少年人当做是社会栋梁，而把那些意志消沉的衰老之人当做老成持重的话，那也是错误的。像邓禹年少时就深沉、坚毅，马援虽年老却精神矍铄的人，古代确实有过，但毕竟不是多数！

If you don't design your own life plan, chances are you'll fall into someone else's plan. And guess what they have planned for you? Not much.

So why do I talk about the benefits of failure? Simply because failure meant a stripping away of the inessential. I stopped pretending to myself that I was anything other than what I was, and began to direct all my energy into finishing the only work that mattered to me.

Democracy must be born anew every generation, and education is its midwife.

We always use poetic language to describe our embarrassment in the cracks of youth.

人们在做事时绝不能够拖拉，不能够反复多变，不能够斤斤计较；可是替别人做事时，却特别需要耐得住拖延耽搁，耐得住反复多变，耐得住琐碎烦乱。