Every man is apt to form his notions of things difficult to be apprehended,
or less familiar, from their analogy to things which are more familiar.
Thus, if a man bred to the seafaring life, and accustomed to think and talk
only of matters relating to navigation, enters into discourse upon any other
subject; it is well known, that the language and the notions proper to his
own profession are infused into every subject, and all things are measured
by the rules of navigation: and if he should take it into his head to
philosophize concerning the faculties of the mind, it cannot be doubted,
but he would draw his notions from the fabric of the ship, and would find
in the mind, sails, masts, rudder, and compass.
                -- Thomas Reid, "An Inquiry into the Human Mind", 1764