Lucretius, On the Nature of Things 5.821-827
quare etiam atque etiam maternum nomen adepta
terra tenet merito, quoniam genus ipsa creavit
humanum atque animal prope certo tempore fudit
omne quod in magnis bacchatur montibus passim,
aëriasque simul volucres variantibus formis.
sed quia finem aliquam pariendi debet habere,
destitit, ut mulier spatio defessa vetusto.
Therefore, again and again, the earth deservedly holds the name of ‘mother’ which she has acquired, since she herself created the human race and almost at a fixed time she has produced every animal which roams all over the great mountains, and, at the same time, the birds of the air in their varied forms. But, because she must have some limit to her birthing, she ceased, like a woman worn out by the extent of her age.