τὸ μὲν εὖ πράσσειν ἀκόρεστον ἔφυ πᾶσι βροτοῖσιν → all mortals have by nature an insatiable appetite for success, our mortal state with bliss is never satiate, success is something for which humanity is insatiatable
he who acts
el que actúa, el oficiante