知足知不足m
因果=Cause & effect/result/outcome/consequence.有因必有果:(1)"Where there is a cause, there will be a consequence." (2) "Every cause brings a consequence."(3) "Leaf won't move without wind."[叶无风不会移动;无风不起浪.](4) "boomerang effect" = 自食其果(5)"Karma as the law of cause and effect" (佛教的<因果报应>论)
