Everywhere today we see parties being formed for one object or another. People nowadays have no discernment, nor do they desire to have it where party opinions and party programs are concerned. With intellectual ingenuity, proof can be furnished in support of the most radically opposing theories. Very clever arguments can be used to prove the soundness of Leninism — but the same applies to directly contrary principles and also to what lies between the two extremes. An excellent case can be made out for every party program: but the one who establishes the validity of the opposite program is equally right. The intellectualism prevailing among people today is not capable of demonstrating the inner potentialities and values of anything. It can furnish proofs; but what is intellectually proved should not be regarded as of real value or efficacy in life. People oppose one another in parties because the soundness of every party opinion — at any rate the main party opinions — can be proved with equal justification. Our intellect remains at the surface layer of understanding and does not penetrate to the deeper layer where the truth actually lies. This, too, must be fundamentally and thoroughly understood.
Source: Rudolf Steiner – GA 193 – Influences of Lucifer/Ahriman: Lecture Three / Bern – 4th November, 1919