Abstraction is thus almost a necessity for communication, since it enables us to represent our experiences with simple and rapidly made “grasps” of the mind. When we say that we can think only of one thing at a time, this is like saying that the Pacific Ocean cannot be swallowed at a gulp. It has to be taken in a cup, and downed bit by bit. Abstractions and conventional signs are like the cup; they reduce experience to units simple enough to be comprehended one at a time.
