(Greek = seminal reason)
According to the Stoics, logos is the ordering principle in the cosmos, and logos spermatikos is the Universe's generative principle which both creates and then takes back all things.
1. "Individual souls are perishable by nature, and can be transmuted and diffused, assuming a fiery nature, by being received into the Seminal Reason (logos spermatikos) of the Universe."
(Marcus Aurelius, Meditations, iv. 21)