From Fourth International, Vol. I No. 1, May 1940, p. 30.
Thus we see that high-sounding phrases against the ossification of thought, etc., conceal carelessness and helplessness in the development of theoretical ideas. The case of the Russian Social-Democrats strikingly illustrates the fact observed in the whole of Europe (and long ago observed in German Marxism) that the notorious freedom of criticism implies, not the substitution of one theory by another, but freedom from every complete and thought-out theory; it implies eclecticism and absence of principle. Those who are in the least acquainted with the actual state of our movement cannot but see that the spread of Marxism was accompanied by a certain deterioration of theoretical standards. Quite a number of people, with very little, and even totally lacking in, theoretical training, joined the movement for the sake of its practical significance and its practical successes.
– Lenin in What is to be Done?
Last updated on 21.9.2007