The logical thing to do, when the next war comes, is to recruit an army from all those of whatever age or sex who are unable to pass certain basic intelligence tests. This would be a good way of getting rid of a lot of the stupid people who cumber the earth; probably there would be a high percentage of scientists, Civil Servants, uplifters and minor prophets in an armed force collected in such a way. But if every country adopted this method the country with the biggest population of boobs, yahoos and ninnies would win, and I am not entirely sure that we have overall superiority in this respect, though we seem bound in that direction.

The Diary of Samuel Marchbanks (1947)