The crucial thing is to never stop thinking and working and never do what we did with malaria and tuberculosis in the 20th century which is to surrender to complexity and quit.

关键的东西是永远不要停止思考和行动。我们千万不能再犯上个世纪在疟疾和肺结核上犯过的错误，那时我们因为它们太复杂，而放弃了采取行动。

youdao

The chief reason for this is that the former do not give a moment's thought to the ills they endure, whereas the latter never stop thinking of the good things they have not got.

这两种人差别这么大，主要是因为，前者从不思考他们所忍受的不幸，而后者从不停止思考他们仍未得到的好东西。

youdao

The crucial thing is to never stop thinking and working – and never do what we did with malaria and tuberculosis in the 20th century – which is to surrender to complexity and quit.

关键是永远不要停止思考和工作-绝不能像我们在20世纪在对付疟疾和结核病做的那样--即向错综复杂投降而放弃。

youdao

In the countless hours of painful physical therapy, I never stop thinking of my dreams and I will never quit.

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