《Tetrabiblos》The Quality And Nature Of The EffectClaudius Ptolemy（Ashmand 英譯 1822）
In order to understand the indications thus made, it is necessary to begin by attending to the following detail of the effective property of each planet—previously observing, however, that, when any circumstance is said, for the sake of brevity, to come to pass by the general influence of the five planets, their temperament, and the power and assistance they may derive from natures similar to their own, the actual continuance of their own proper constitution, or the casual combination of any analogous influence, arising from fixed stars or places in the zodiac, are all, at the same time, to be kept in view.
段落 tetra-2-thequality-4public-domain (Ashmand 1822)
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