We have to come back to the spirit by way of the intellect. And that, you see, is the task of anthroposophy. It has no wish to do what would please many people, that is, to bring primitive conditions back to humanity-ancient Indian wisdom, for example. It is nonsense when people harp on that. Anthroposophy, on the other hand, sets value on a return to the spirit, but a return to the spirit precisely in full possession of the intellect, with the intellect fully alive. It is important, gentlemen, and must be borne strictly in mind, that we have nothing at all against the intellect; rather, the point is that we have to go forward with it. Originally human beings had spirit without intellect; then the spirit gradually fell away and the intellect increased. Now, by means of the intellect, we have to regain the spirit. Culture is obliged to take this course.
If it does not do so — well, gentlemen, people are always saying that the World War was unlike anything ever experienced before, and it is indeed a fact that men have never before so viciously torn one another to pieces. But if men refuse to take the course of returning to the spirit and bringing their intellect with them, then still greater wars will come upon us, wars that will become more and more savage. Men will really destroy one another as the two rats did that, shut up together in a cage, gnawed at each other till there was nothing left of them but two tails. That is putting it rather brutally, but in fact mankind is on the way to total extermination. It is very important to know this.
Source: Rudolf Steiner – GA 354 – The Evolution of the Earth and Man and The Influence of the Stars: Lecture VIII – Dornach, 6th August 1924
Translated by Gladys Hahn