While a man’s father is alive, look at the bent of his will; when his father is dead, look at his conduct. If for three years he does not alter from the way of his father, he may be called filial.
父在，观其志；父没，观其行；三年无改于父之道，可谓孝矣。
Source: The Analects, Xue Er I, Chapter 11
Author: Confucius / 孔子
