ABSTRACT
The several modes of feeling, perception, desire, and will, so far as we are aware of them, are in general called ideas (mental representations) and it may be roughly said that philosophy puts thoughts, categories, or, in more precise language, adequate notions, in the place of generalized images we ordinarily call ideas. Mental impressions such as these may be regarded as the metaphors of thoughts and notions. But to have these figurate conceptions does not imply that we appreciate their intellectual significance, the thoughts and rational notions to which they correspond. Conversely, it is one thing to have thoughts and intelligent notions, and another to know what impressions, perceptions, and feelings correspond to them’. 1
