A socialist party programme and an anti-socialist programme can be supported by arguments of equal validity. And if men fail to realise that this kind of “proof” lies so utterly on the surface that the No and the Yes can both be justified with our modern intelligence — useful as it is for natural science but not for a different kind of knowledge — if men do not realise that this intelligence lies entirely on the surface in spite of serving economic life so effectively, they will continue to apply it to social life and spiritual life irrespectively. One group will prove one thing, another its exact opposite, and as both proofs can be shown to be equally logical, hatred and bitterness — of which there is more than enough in the world — will be intensified.
Source: Rudolf Steiner – GA 191 – Lucifer and Ahriman: Lecture I – Dornach, 1st November, 1919
Translated by Dorothy S. Osmond