The years of parents may by no means not be kept in the memory, as an occasion at once for joy and for fear.
父母之年，不可不知也。一则以喜，一则以惧。
Source: The Analects, Li Ren IV, Chapter 21
Author: Confucius / 孔子
Confucius on the Paradox of Love: Why a Parent’s Age Brings Both Joy and Fear
