Philosophers and bookish people generally tend to live a life dominated by words, and even to forget that it is the essential function of words to have a connection of one sort or another with facts, which are in general non-linguistic. Some modern philosophers have gone so far as to say that words should never be confronted with facts but should live in a pure, autonomous world where they are compared only with other words. When you say, ‘the cat is a carnivorous animal,’ you do not mean that actual cats eat actual meat, but only that in zoology books the cat is classified among carnivora. These authors tell us that the attempt to confront language with fact is ‘metaphysics’ and is on this ground to be condemned. This is one of those views which are so absurd that only very learned men could possibly adopt them.Bertrand Russell, My Philosophical Development (1959)
cf. Orwell, Notes On Nationalism