The connection with the brain does not in itself prove that the psyche is an epiphenomenon, a secondary function causally dependent on biochemical processes.
Nevertheless, we know only too well how much the psychic function can be disturbed by verifiable processes in the brain, and this fact is so impressive that the subsidiary nature of the psyche seems an almost unavoidable inference.
The phenomena of parapsychology, however, warn us to be careful, for they point to a relativization of space and time through psychic factors which casts doubt on our naïve and overhasty explanation of the parallels between the psychic and the physical.
For the sake of this explanation people deny the findings of parapsychology outright, either for philosophical reasons or from intellectual laziness.
This can hardly be considered a scientifically responsible attitude, even though it is a popular way out of a quite extraordinary
To assess the psychic phenomenon, we have to take account of all the other phenomena that come with it, and accordingly we can no longer practice any psychology that ignores the existence of the unconscious or of parapsychology.
The structure and physiology of the brain furnish no explanation of the psychic process.
The psyche has a peculiar nature which cannot be reduced to anything else.
Like physiology, it represents a relatively self-contained field of experience to which we must attribute a quite special importance because it holds within itself one of the two indispensable conditions for existence as such, namely, the phenomenon of consciousness.
Without consciousness there would, practically speaking, be no world, for the world exists as such only in so far as it is consciously reflected and consciously expressed by a psyche. Consciousness is a precondition of being.
Thus the psyche is endowed with the dignity of a cosmic principle, which philosophically and in fact gives it a position coequal with the principle of physical being.
The carrier of this consciousness is the individual, who does not produce the psyche on his own volition but is, on the contrary, pre-formed by it and nourished by the gradual awakening of consciousness during childhood.
If the psyche must be granted an overriding empirical importance, so also must the individual, who is the only immediate manifestation of the psyche.
This fact must be expressly emphasized for two reasons.
Firstly, the individual psyche, just because of its individuality, is an exception to the statistical rule and is therefore robbed of one of its main characteristics when subjected to the leveling influence of statistical evaluation.
Secondly, the Churches grant it validity only in so far as it acknowledges their dogmas – in other words, when it surrenders to a collective category.
In both cases the will to individuality is regarded as egotistic obstinacy.
Science devalues it as subjectivism, and the Churches condemn it morally as heresy and spiritual pride. ~Carl Jung, The Undiscovered Self.