A COLLECTION OF GOOD WORDS
警惕
Vigilance
Doubt must be no more than vigilance, otherwise it can become dangerous.
怀疑只能是警惕，否则就会变得危险。
I sometimes think that the price of liberty is not so much eternal vigilance as eternal dirt.
我有时认为，自由的代价与其说是永远的警惕，不如说是永远的肮脏。