Constructive Set Theory/aczels Constructive Zermelo-fraenkel

Famous quotes containing the words constructive, set and/or theory:

    ... the constructive power of an image is not measured in terms of its truth, but of the love it inspires.
    Sarah Patton Boyle, U.S. civil rights activist and author. The Desegregated Heart, part 1, ch. 15 (1962)

    A more secret, sweet, and overpowering beauty appears to man when his heart and mind open to the sentiment of virtue. Then he is instructed in what is set above him. He learns that his being is without bound; that to the good, to the perfect, he is born, low as he now lies in evil and weakness.
    Ralph Waldo Emerson (1803–1882)

    There never comes a point where a theory can be said to be true. The most that one can claim for any theory is that it has shared the successes of all its rivals and that it has passed at least one test which they have failed.
    —A.J. (Alfred Jules)