论语 > 学而篇
原文
子曰:“父在观其志,父没观其行。三年无改于父之道,可谓孝矣。”
英译
Confucius said, "Study one's ambition when his father is still alive. Observe one's action after his father passes away. Providing that one can hold fast to his father's principles for some three years without altering, he can be called a dutiful son."