I have read a great deal now on the neurological side and much on the anthropological side and on the philosophical side and we have had all these discussions and all the time I have the feeling that something may break. I mean that some little light at the end of the tunnel may be sensed or some flash of insight may come. I of course know very well that there is no guarantee it will come, but I have already got myself into this state of expectancy that something will come to my imagination which has some germ of truth about it in this most difficult field.

p. 467 - The Self and Its Brain (1977)