《Numbers: Their Occult Power and Mystic Virtue》數字的神秘象徵 (Occult Power of Numbers)William Wynn Westcott (1890)
INDIVIDUAL NUMERALS. Chapter I. — The Monad. The number One or the Monad has been defined by the ITathematician Thcon of Sm)-rna as " the principle and element of numbc.s, which while multitude can be lessened by subtraction, is itself deprived of ovcry number and remains stable and firm " ; hence as number it is indivisible, it remains immutable, and even multiplied into itself remains itself only, since once one is still one, and the monad multiplied b}' the monad remains the immutable monad to infinitv.
段落 westcott-1public-domain (1890)
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