ABSTRACT
In addition to the capacity for the registration of external stimuli (sensation and perception) and for their revival in the form approximating to that in which they were first registered (memory), mind has the capacity, which it constantly uses, of building up the material of experience into new configurations—i.e. in relationships with each other which the items of experience did not have when presented to the senses. This is thinking of a conceptual kind. Conceptual thinking can be either realistic or phantastic.
