脾气切忌旺盛，心志切忌满足，才情切忌显露。
The only limit to our realization of tomorrow will be our doubts of today.
A building should not shout; it should whisper to the people who use it.
解释：君子有三件值得可惜的事：一辈子不学习，是第一件可惜的事；一天无所事事，是第二件可惜的事；一个人的名声败坏，是第三件可惜的事。