One thorn of experience is worth a whole wilderness of warning. 一次痛苦的经验抵得上千百次的告诫。
Once bitten, twice shy. 一次被咬,下次胆小。
Neither beliver nor reject anything, because any other person has rejected of believed it. Heaven has given you a mind for judging truth and error, Use it. 不要因为别的人相信或否定了什么东西,你也就去相信它或否定它。上帝赠予你一个用来判断真理和谬误的头脑。那你就去运用它吧。
Mistakes are an essential part of education. 从错误中吸取教训是教育极为重要的一部分。
Learn young, learn fair. 学习趁年轻,学就要学好。