Fraenkel Set Theory

Famous quotes containing the words set and/or theory:

    The question is not ... if art is enough to fulfill my life, but if I am true to the path I have set for myself, if I am the best I can be in the things I do. Am I living up to the reasons I became a singer in the first place?
    Kathleen Battle (b. 1948)

    The theory of the Communists may be summed up in the single sentence: Abolition of private property.
    Karl Marx (1818–1883)