此诗简洁精炼，通俗易懂，寓意深刻，耐人寻味。诗人买来一只晨鸡，嘱咐它平时不用随便啼，到寒冷黑暗之时（比喻险恶的环境），在天亮之前啼一声就已足够。晨鸡报晓，本是其本能，但诗人能注理于物，让读者自行领悟，使全诗显得理趣盎然。

《晨鸡》 白居易

买得晨鸡共鸡语，
常时不用等闲鸣。
深山月黑风寒夜，
欲近晓天啼一声。

A Rooster
Bai Juyi

I bought a rooster from the market and to him I say,
"You need not crow leisurely in a coop near the lawn.
On a pitch-black night in a cold region far away
Do crow hard to herald the approach of dawn."