The Raw Material Of Thought

From what has been said, it is seen that we can know only those things

concerning the outside world which are capable of being reported to us

by means of sense impressions, simple or complex--all of our thought

regarding the world is made up from "the raw materials of thought" which

psychologists have termed sensations. Consequently, if an individual is

deprived of one or more of his ordinary senses, his knowledge of the

outside world is decreased to just that extent. And, likewise, if the

individual were to be given one or more additional senses, his knowledge

of the world would be increased in the same ratio. The same result, at

least in a certain degree, would be attained if the existing senses of

the individual were to be increased in power so as to register higher

rates of vibration than they now consciously register and record.