The first issue that must be faced in the analysis of thinking and speech concerns the relationship among the various mental functions, the relationship among the various forms of the activity of consciousness. This issue is fundamental to many problems in psychology. In the analysis of thinking and speech, the central problem is that of the relationship of thought to word. All other issues are secondary and logically subordinate; they cannot even be stated properly until this more basic issue has been resolved. Remarkably, the issue of the relationships among the various mental functions has remained almost entirely unexplored. In effect, it is a new problem for contemporary psychology.