Philo Judaeus De Cherubim 89

[89] The air, again, being sometimes warmed and sometimes cooled, and being capable of every sort of change, is easily proved to labour by the variations to which we feel that it is subject, since the most general cause of change is fatigue, and it would be folly to enter into any long detail about terrestrial or aquatic animals, dwelling at any length upon their general or particular changes; for these animals very naturally are liable to weakness in a much greater degree than those sublime objects, inasmuch as they partake to the greatest extent of the lowest, that is of earthly essence.