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)

    It is a great pity—but ‘tis certain from every day’s observation of man, that he may be set on fire like a candle, at either end—provided there is a sufficient wick standing out.
    Laurence Sterne (1713–1768)

    We commonly say that the rich man can speak the truth, can afford honesty, can afford independence of opinion and action;—and that is the theory of nobility. But it is the rich man in a true sense, that is to say, not the man of large income and large expenditure, but solely the man whose outlay is less than his income and is steadily kept so.
    Ralph Waldo Emerson (1803–1882)