I don't remember him even HAVING a son.
Title is definitely better than the last two though (although for the longest time I always assumed that phrase originated with TNG. lol)
^I vaguely recall there being a boy and a girl in the first film when matey bloke from Ghostbusters went round their house.
As for the saying, I'm reasonably sure it's a Native American saying (not sure, but it might have been from Crazy Horse.) Of course I wouldn't be surprised if a dozen other cultures have come up with something similar at some point or another, but I think that is the most often credited source.