Physiology and psychiatry.

It remains sadly true that most of our present understanding of mind would remain as valid and useful if, for all we knew, the cranium were stuffed with cotton wadding. In time, the detailed correlation of psychic phenomena and neural processes will surely come; but today we are hardly beyond the stage of unequivocal evidence that the correlation does exist. The neuro-anatomist and physiologist are still crudely deciphering the architecture and operation of the organ of mind; the psychologist and psychiatrist are concerned with nuances in the overtones it plays(x, p. 487).

[1]  Fate and Freedom: A Review and Rejoinder , 1946, Ethics.

[2]  R. Gerard The biological basis of imagination. , 1946, The Scientific monthly.