Zvi,

Aristotle (4th century BCE) taught that matter was eternal, which would be the opposite of Creation ex-nihilo.  So, you are correct, since the Aristotelian notion would then impart a "material essence" to God, which is completely contrary to the idea that God is not part of our space-time.

UriYosef

Our raison d'être:

WHOSOEVER DESTROYS A SINGLE SOUL OF ISRAEL, SCRIPTURE IMPUTES [GUILT] TO HIM AS THOUGH HE HAD DESTROYED A COMPLETE WORLD; AND WHOSOEVER PRESERVES A SINGLE SOUL OF ISRAEL, SCRIPTURE ASCRIBES [MERIT] TO HIM AS THOUGH HE HAD PRESERVED A COMPLETE WORLD. (Babylonian Talmud, Tractate Sanhedrin, 37a)

The fruits of our effort:

The battle against spiritual terrorism is being won, one soul at a time!!!