Sensations and Complexes of Sensations
For every scientist who has not been led astray by professorial philosophy, as well as for every materialist, sensation is indeed the direct connection between consciousness and the external world; it is the transformation of the energy of external excitation into the fact of consciousness. This transformation has been, and is, observed by each of us a million times on every hand. The sophism of idealist philosophy consists in the fact that it regards sensation as being not the connection between consciousness and the external world, but a fence, a wall, separating consciousness from the external world – not an image of the external phenomenon corresponding to the sensation, but as the “sole entity”. Avenarius gave but a slightly changed form to this old sophism, which had been already worn threadbare by Bishop Berkeley. Since we do not yet know all the conditions of the connection we are constantly observing between sensation and matter organised in a definite way, let us therefore acknowledge the existence of sensation alone – that is what the sophism of Avenarius amounts to.
V.I.Lenin, Materialism and Empirio-criticism: Critical Comments on a Reactionary Philosophy, 1908, Progress Publishers, Moscow, 1977, 38
Part one/to be continued…