Fraenkel Set Theory

Famous quotes containing the words set and/or theory:

    “I must have the gentleman to haul and draw with the mariner, and the mariner with the gentleman.... I would know him, that would refuse to set his hand to a rope, but I know there is not any such here.”
    —Francis, Sir Drake (1540–1596)

    “Everything to which we concede existence is a posit from the standpoint of a description of the theory-building process, and simultaneously real from the standpoint of the theory that is being built. Nor let us look down on the standpoint of the theory as make-believe; for we can never do better than occupy the standpoint of some theory or other, the best we can muster at the time.”
    —Willard Van Orman Quine (b. 1908)