Augustine of Hippo — as excerpted in the Catena Aurea on John 1:1

“(lib. lxxxiii. Quæst. q. 63) The Greek word “logos” signifies both Word and Reason. But in this passage it is better to interpret it Word; as referring not only to the Father, but to the creation of things by the operative power of the Word; whereas Reason, though it produce nothing, is still rightly called Reason.”