《Tetrabiblos》That Prescience Is UsefulClaudius Ptolemy（Ashmand 英譯 1822）
Thus, when any opinion is given by the astrologer with respect to the various accidents liable to happen, it should be understood that he advances nothing more than this proposition; viz.
段落 tetra-1-thatpresci-19public-domain (Ashmand 1822)
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