II. The Logic of Thought and the Logic of Reality

I might tell you many things which would indeed enable you to perceive it as a necessity, in reality of life, that such philosophies as that of Avenarius and Mach lead to the conclusion of the most revolutionary socialism of our time. For behind the scenes of existence it is the very same spirits who instill into men's consciousness philosophies after the style of Avenarius or Mach, and who instill once more into men's consciousness that which leads on to Bolshevism for example. Only in Logic you cannot derive the one thing from the other. But the Reality of Life performs this derivation. I beg you inscribe this deep into your hearts, for here too you will have something of what I am constantly emphasizing. It is needful to us to find the transition from the mere tangle of logical ideas, within which the people of today in their illusions imagine the realities of life to be imbued, to the true reality. If we look at the symptoms, and know how to value them, the thing does indeed become far more earnest. Here I will draw your attention to something to which another who is not a Spiritual Scientist will not pay so much attention; for he will take it more as a phrase, as something more or less indifferent. Mach, you see, who is a Positivist, and a radical one at that, comes to the idea that all things are really sensations. This doctrine, which young Adler also expounded in his lectures at Zurich, whereby he will undoubtedly have gained many adherents for himself, and for Mach and for Avenarius—this doctrine declares that everything is sensation, and that we are quite unjustified in distinguishing the physical from the psychical. The table outside us is physical and psychical in precisely the same sense as my ideas are physical and psychical: and we only have concepts for the sake of mental economy.