《Numbers: Their Occult Power and Mystic Virtue》數字的神秘象徵 (Occult Power of Numbers)William Wynn Westcott (1890)
The Tetractys says, Theo of Smyrna in the edition of Ismael Bullialdo 1644, page 147, was not only principally honoured b>' the Pythagoreans because all symphonies exist within it, but also because it appears to contain the nature of all things, hence their oath " Not by him who delivered to our souls the Tetractys " (that is Pythagoras) this tetractys is seen in the composition of the first numbers i.
段落 westcott-68public-domain (1890)
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