《Tetrabiblos》Book 1Claudius Ptolemy（Ashmand 英譯 1822）
[19] The Almagest, or _Magna Constructio_. It is, however, a common practice with the vulgar to slander everything which is difficult of attainment, and surely they who condemn the first of these two studies must be considered totally blind, whatever arguments may be produced in support of those who impugn the second.
段落 tetra-1-ch-4public-domain (Ashmand 1822)
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