When marrying, ask yourself this question: Do you believe that you will be able to converse well with this person into your old age? Everything else in marriage is transitory.
I have achieved my seventy years in the usual way: by sticking strictly to a scheme of life which would kill anybody else... I will offer here, as a sound maxim, this: That we can't reach old age by another man's road.
Brain power improves by brain use, just as our bodily strength grows with exercise. And there is no doubt that a large proportion of the female population, from school days to late middle age, now have very complicated lives indeed.