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All these philosophers believe that the acts of our will and the motion of our bodies depend on those of the stars to which they are subjected, and they refer every thing to the laws of physical necessity, which they call destiny or Fatum, supposing a chain of causes and effects which binds, by I know not what connection, all beings together, from the meanest atom to the supremest power and primary influence of the Gods; so that, whether in their temples or in their idols, the only subject of worship is the power of destiny.
Porphyr.Epist.ad Janebonem.
II.

Second system: Worship of the Stars, or Sabeism.
"But those same monuments present us likewise a system more methodical and more complicated--that of the worship of all the stars; adored sometimes in their proper forms, sometimes under figurative emblems and symbols; and this worship was the effect of the knowledge men had acquired in physics, and was derived immediately from the first causes of the social state; that is, from the necessities and arts of the first degree, which are among the elements of society.
"Indeed, as soon as men began to unite in society, it became necessary for them to multiply the means of subsistence, and consequently to attend to agriculture: agriculture, to be carried on with success, requires the observation and knowledge of the heavens.

It was necessary to know the periodical return of the same operations of nature, and the same phenomena in the skies; indeed to go so far as to ascertain the duration and succession of the seasons and the months of the year.