On Thinking (In: Mind. A Quarterly Review of Psychology and Philosophy. Vol. LXXXI, No. 324, October, 1972.)

1972. Oxford, Basil Blackwell, 1972. 8vo. Orig. gray wrappers w. small nicks to extremities. Internally fine. Pp. 543-552 (the rest of the volume pp. 481-542; 553-639 [10 pp. advertisements]). First publication of the Danish Professor Justus Hartnack's (1912-2205) attempt to specify some concepts in the logic of thinking: "The philosophic problem about thinking is that although thinking is a process, i.e. an activity which can be reported in the present continuous sense, it seems impossible to it with any conceivable process. To be sure thinking has been identified with the mental images which occur during the thinking process, with the thinking person's behaviour, primarily his inner silent speech, and with the neuro-physiological processes in the brain. But, as I shall try to show, thinking cannot be identified with any of these processes."