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PURPLE PATCH: ‘Useless’ Knowledge

Bertran Russell

Perhaps the most important advantage of ‘useless’ knowledge is that it promotes a contemplative habit of mind. There is in the world too much readiness, not only for action without adequate previous reflection, but also for some sort of action on occasions on which wisdom would counsel inaction. People show their bias on this matter in various curious ways. Mephistopheles tells the young student that theory is grey but the tree of life is green, and everyone quotes this as if it were Goethe’s opinion, instead of what he supposes the devil would be likely to say to an undergraduate. Hamlet is held up as an awful warning against thought without action, but no one holds up Othello as a warning against action without thought. Professors such as Bergson, from a kind of snobbery towards the practical man, decry philosophy, and say that life at its best should resemble a cavalry charge. For my part, I think action is best when it emerges from a profound apprehension of the universe and human destiny, not from some wildly passionate impulse of romantic but disproportioned self assertion. A habit of finding pleasure in thought rather than in action is a safeguard against unwisdom and excessive love of power, a means of preserving serenity in misfortune and peace of mind among worries. A life confined to what is personal is likely, sooner or later, to become unbearably painful; it is only by windows into a larger and less fretful cosmos that the more tragic parts of life become endurable.

A contemplative habit of mind has advantages ranging from the most trivial to the most profound. To begin with minor vexations, such as fleas, missing trains, or cantankerous business associates. Such troubles seem hardly worthy to be met by reflections on the excellence of heroism or the transitoriness of all human ills, and yet the irritation to which they give rise destroys many people’s good temper and enjoyment of life. On such occasions, there is much consolation to be found in out of the way bits of knowledge which have some real or fancied connection with the trouble of the moment; or even if they have none, they serve to obliterate the present from one’s thoughts. When assailed by people who are white with fury, it is pleasant to remember the chapter in Descartes’ Treatise on the Passions entitled ‘Why those who grow pale with rage are more to be feared than those who grow red.’ When one feels impatient over the difficulty of securing international co-operation, one’s impatience is diminished if one happens to think of the sainted King Louis IX, before embarking on his crusade, allying himself with the Old Man of the Mountain, who appears in the Arabian Nights as the dark source of half the wickedness in the world. When the rapacity of capitalists grows oppressive, one may be suddenly consoled by the recollection that Brutus, that exemplar of republican virtue, lent money to a city at 40 per cent, and hired a private army to besiege it when it failed to pay the interest.

Curious learning not only makes unpleasant things less unpleasant, but also makes pleasant things more pleasant. I have enjoyed peaches and apricots more since I have known that they were first cultivated in China in the early days of the Han dynasty; that Chinese hostages held by the great King Kaniska introduced them into India, whence they spread to Persia, reaching the Roman Empire in the first century of our era; that the word ‘apricot’ is derived from the same Latin source as the word ‘precocious’, because the apricot ripens early; and that the A at the beginning was added by mistake, owing to a false etymology. All this makes the fruit taste much sweeter.

About a hundred years ago, a number of well-meaning philanthropists started societies ‘for the diffusion of useful knowledge’, with the result that people have ceased to appreciate the delicious savour of ‘useless’ knowledge.

Russell needs no introduction. One of the most incisive and prolific writers of his times, some of his best prose is contained in his essays. This passage is from the essay, “‘Useless’ Knowledge” included in the compilation entitled “In Praise of Idleness”.

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