III. Thinking in the Service of Understanding the World

However, as object of observation, thinking differs essentially from all other objects. The observation of a table or a tree occurs in me as soon as these objects appear within the range of my experience. But my thinking that goes on about these things, I do not observe at the same time. I observe the table; the thinking about the table I carry out, but I do not observe it at the same moment. I would first have to transport myself to a place outside my own activity if, besides observing the table, I wanted also to observe my thinking about the table. Whereas observation of things and events, and thinking about them, are but ordinary occurrences filling daily life, the observation of thinking itself is a sort of exceptional situation. This fact must be taken into account sufficiently when we come to determine the relation of thinking to all other contents of observation. It is essential to be clear about the fact that when thinking is observed the same procedure is applied to it as the one we normally apply to the rest of the world-content, only in ordinary life we do not apply it to thinking.