" You would think, wouldn’t you, that if you were the child
of a happy marriage, then you ought to have a better than
average marriage yourself – either through some genetic
inheritance or because you’d learnt from example? But it
doesn’t seem to work like that. So perhaps you need the
opposite example – to see mistakes in order not to make
them yourself. Except this would mean that the best way for
parents to ensure their children have happy marriages
would be to have unhappy ones themselves. So what’s the
answer? "

― Julian Barnes , Pulse