Constructive Set Theory/aczels Constructive Zermelo%e2%80%93fraenkel

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

    “Euphemisms are not, as many young people think, useless verbiage for that which can and should be said bluntly; they are like secret agents on a delicate mission, they must airily pass by a stinking mess with barely so much as a nod of the head, make their point of constructive criticism and continue on in calm forbearance. Euphemisms are unpleasant truths wearing diplomatic cologne.”
    —Quentin Crisp (b. 1908)

    “A fool, A fool! I met a fool i’ the forest,
    A motley fool. A miserable world!
    As I do live by food, I met a fool,
    Who laid him down and basked him in the sun,
    And railed on Lady Fortune in good terms,
    In good set terms, and yet a motley fool.”
    —William Shakespeare (1564–1616)

    “Won’t this whole instinct matter bear revision?
    Won’t almost any theory bear revision?
    To err is human, not to, animal.”
    —Robert Frost (1874–1963)