《Tetrabiblos》That Prescience Is UsefulClaudius Ptolemy（Ashmand 英譯 1822）
Nevertheless, the fulfilment of events thus indicated must not be ascribed solely to the vigour of the cause producing them, nor to any inevitable fate, but rather to the absence of any opposing influence capable of prevention.
段落 tetra-1-thatpresci-15public-domain (Ashmand 1822)
↗ 開啟公有領域原文（Wikisource）此段為公有領域典籍逐字擷取，零 AI 生成；原文亦存繁化前底本，可逐字審計。我們寧可少引、不可錯引——驗不過的引文一律捨棄。