"Generally, we are more concerned with handling and using things than with knowing them in their true nature. Thus we usually grasp in haste the very first few signals conveyed to us by a perception. Then, through deeply ingrained habit, those signals evoke a standard response by way of judgements such as good-bad, pleasant-unpleasant, useful-harmful, right-wrong. ... A world perceived in this superficial way will consist of shapeless little lumps of experiences marked by a few subjectively selected signs or symbols. The symbols chosen are determined mainly by the individual’s self-interest; sometimes they are even misapplied. The shadow-like world that results includes not only the outer environment and other persons, but also a good part of one’s own bodily and mental processes. These, too, become subjected to the same superficial manner of conceptualization."