《Numbers: Their Occult Power and Mystic Virtue》數字的神秘象徵 (Occult Power of Numbers)William Wynn Westcott (1890)
It is a " Middle and Analogy " because all comparisons consist of three terms, at least ; and analogies were called by the ancients " middles." It was considered the Mistress of Geometry because the triangle is the principal of Figures.
段落 westcott-42public-domain (1890)
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