Famous quotes containing the words upper and/or main:
“If the upper beams are not straight, the lower beams will be crooked.”
—Chinese proverb.
“The three main medieval points of view regarding universals are designated by historians as realism, conceptualism, and nominalism. Essentially these same three doctrines reappear in twentieth-century surveys of the philosophy of mathematics under the new names logicism, intuitionism, and formalism.”
—Willard Van Orman Quine (b. 1908)