To Metrodorus it seems absurd, that in a large field one only stalk should grow, and in an infinite space one only world exist; and that this universe is infinite is manifest by this, that there is an infinity of causes. Now if this world be finite and the causes producing it infinite, it follows that the worlds likewise be infinite; for where all causes concur, there the effects also must appear, let the causes be what they will, either atoms or elements., Plutarch, Concerning Nature
Metrodorus of Lampsacus "the Younger" (331- 278/7 BC) was a Greek philosopher of the Epicurean school. Although one of the four major proponents of Epicureanism, only fragments of his works remain. Epicurus claimed him not to be an original thinker.
The books he authored include:
Against the Physicians (3 volumes)
See Image of a Metrodorus / Epicurus double herm
There is also a Metrodorus of Lampsacus
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