McGuckin on the "axiom" hopou logos agei in Origen

      Where does this (presumably something like ὅπου λόγος ἄγει), or some semblance thereof, occur in Origen?  So far as I've been able to tell, McGuckin doesn't say.  McGuckin translations (there are others, as, for example, here):

• "'Follow wherever Holy Reason leads'"
  
• "'Let us go wherever the Divine Logos takes us'"
• "the soul must follow 'wherever the Logos leads'"

So far I've come up empty, even in Thesaurus Linguae Graecae, searched fairly loosely (though my Greek isn't really up to snuff), and McGuckin has yet to reply.