《Tetrabiblos》The ParentsClaudius Ptolemy（Ashmand 英譯 1822）
In the investigation of all these circumstances, it is highly essential that the properties of the signs, in which are situated the stars actuating the influence, should be also taken into consideration; and that, by day, the Sun and Venus should be principally observed; and by night, Saturn and the Moon.
段落 tetra-3-theparents-23public-domain (Ashmand 1822)
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