There's been some discussion of vintage Sesame Street clips in the combox. This one is the clear winner for all time.
Brothers, love is a teacher, but a hard one to obtain: learning to love is hard and we pay dearly for it. It takes hard work and a long apprenticeship, for it is not just for a moment that we must learn to love, but forever. (Fyodor Dostoyevsky, The Brothers Karamazov)