盛喜中勿许人物，盛怒中勿答人书。
译文：高兴欣喜之时不要轻易向其他人许诺，生气愤怒之时不要和其他人争执说话。赏析：人在情绪波动之时，做出的任何抉择往往都是错误的。人只有在心平气和之下，才能非常理性地做出选择。
We must accept finite disappointment, but we must never lose infinite hope.
The land gives us everything; we must give something back.
The value of a mental process lies in its utility for the organism's adjustment to life.