keep fit and don't lose your nerve.
保持健康,不要失去勇氣。
數(shù)學(xué)的本質(zhì)在于它的自由。
The condition of man... is a condition of war of everyone against everyone.
本我所在之處,自我必將隨之。
我不會(huì)讓過去拖累我,我會(huì)讓它推動(dòng)我前進(jìn)。
To wear your heart on your sleeve isn't a very good plan; you should wear it inside, where it functions best.
The most dangerous phrase in the language is, 'We've always done it this way.'