The disciple Confucius praised above all others, who lived on a bowl of rice and a gourd of water in a poor alley and stayed cheerful. He died young, and Confucian temples honour him as the 复圣.
'Restrain yourself and return to ritual' comes from the Yan Yuan book of the Analects; it is what Confucius told Yan Yuan.
Tips
usage
His frugal life gave the idiom 箪食瓢饮 'a basket of rice, a gourd of drink', for a poor but contented life; 食 is read sì here, not shí. Fellow disciple 子贡 said he could hear one thing and grasp ten, the idiom 闻一知十.
usage
Book 12 opens 颜渊问仁 'Yan Yuan asked about humaneness', hence its name. It is also the source of 君子成人之美 and 民无信不立.