An agent that is the cause of all things but does not itself have a cause.
1The sphere which approaches most nearly to it is called the primum mobile.
2The ninth was the primum mobile, and inclosing all was the tenth heaven-theEmpyrean.
3No, I of only I want you to tell us what was the primum mobile in the matter.
4In thirty lines his patron is a river, the primum mobile, a pilot, a victim, the sun, any thing and nothing.
5And this is why that first moved-thePrimum Mobile-hassuch extremely rapid motion.
6The ninth, or Primum Mobile, revolved by the Seraphim, is the abode of the moral philosophers.
7The fixed unit of time is the day which is established by the revolution of the Primum Mobile.
8"The primum mobile of the new system was Motion, in distinction from the rest which marked the old monastic retreats."