Famous quotes containing the words rigid and/or vehicle:
“Lets call something a rigid designator if in every possible world it designates the same object, a non-rigid or accidental designator if that is not the case. Of course we dont require that the objects exist in all possible worlds.... When we think of a property as essential to an object we usually mean that it is true of that object in any case where it would have existed. A rigid designator of a necessary existent can be called strongly rigid.”
—Saul Kripke (b. 1940)
“If you are to reach masses of people in this world, you must do it by a sign language. Whether your vehicle be commerce, literature, or politics, you can do nothing but raise signals, and make motions to the people.”
—John Jay Chapman (18621933)
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