不孝有三,無後為大 [ㄅㄨˋ ㄒㄧㄠˋ ㄧㄡˇ ㄙㄢ , ㄨˊ ㄏㄡˋ ㄨㄟˊ ㄉㄚˋ; bu4 xiao4 you3 san1 , wu2 hou4 wei2 da4] There are three ways to be unfilial; having no sons is the worst. (citation from Mencius 孟子[ㄇㄥˋ ㄗˇ; meng4 zi3]) ◄ ►