a man can die but once. 人生只有一次死。
a man can do no more than he can. 凡事只能量力而行。
a man can never thrive who had a wasteful wife. 妻子浪费无度，丈夫不会出头。
a man cannot serve two masters. 一仆不能事二主。
a man can not spin and reel at the same time. 一心不能二用。
a man has his hour, and a dog has his day. 人有称心时，狗有得意日。
a man has two ears and one mouth that he may hear much and speak little.人有两只耳朵一张嘴，就是为了多听少说话。
a man is as old as he feels. 老不老，自己晓。
a man is known by the company he keeps. 察其友知其人。
a man is not a horse because he was born in a stable. 人并不因为生在马厩里就成了马。
a man is not good or bad for one action. 判断人的好坏不能凭一次行为。
a man without reason is a beast in season. 人无理智就像是一头发情的野兽。
a match will set fire to a large building. 星星之火，可以燎原。
本文来源：https://www.010zaixian.com/wenxue/juzi/773430.htm