Note 40 — Chapter XXXVIII · TIMÆUS AND KRITIAS.

My explanation of this much controverted sentence differs from that of previous commentators. I have given reasons for adopting it in a separate Dissertation (‘Plato and the Rotation of the Earth,’ Murray), to which I here refer. In that Dissertation I endeavoured to show cause for dissenting from the inference of M. Boeckh: who contends that Plato cannot have believed in the diurnal rotation of the Earth, because he (Plato) explicitly affirms the diurnal rotation of the outer celestial sphere, or Aplanes. These two facts nullify each other, so that the effect would be the same as if there were no rotation of either. My reply to this argument was, in substance, that though the two facts really are inconsistent — the one excluding the other — yet we cannot safely conclude that Plato must have perceived the inconsistency; the more so as Aristotle certainly did not perceive it. To hold incompatible doctrines without being aware of the incompatibility, is a state of mind sufficiently common even in the present advanced condition of science, which I could illustrate by many curious examples if my space allowed. It must have been much more common in the age of Plato than it is now.

Batteux observes (Traduction et Remarques sur Ocellus Lucanus, ch. iv. p. 116):— “Il y a un maxime qu’on ne doit jamais perdre de vue en discutant les opinions des Anciens: c’est de ne point leur prêter les conséquences de leurs principes, ni les principes de leurs conséquences”.

As a general rule, I subscribe to the soundness of this admonition.