De Plantatione

Philo Judaeus

The works of Philo Judaeus, the contemporary of Josephus, volume 1. Yonge, C. D., translator. London: Henry G. Bohn, 1854.

And, indeed, God has caused plants to grow with their heads downwards, having fixed their heads in the deepest parts of the earth; and having drawn up the heads of the irrational animals from the earth, he has set them up high on long necks, putting their fore feet under their necks as a kind of foundation.