Σοφιστής and 'Saruman', or, Tolkien at play in the fields of philology

Every now and then I see a connection that has been staring me in the face for a long time, one of those connections that seems unbelievably obvious in retrospect. By a long time I mean well more than half of my life, since I have been reading Tolkien for nearly 50 years and Greek for more than 40. Recently I have been read Dennis Wilson Wise's perceptive article, 'Between Rage and Eloquence in Saruman and Thrasymachus', in The Journal of Tolkien Research 3 (2016), and currently I am reading Simon Critchley's book, Tragedy, the Greeks, and Us (2019).

Thrasymachus, to whom Wise compares Saruman, was a Sophist, one of those allegedly unscrupulous moral relativist teachers for hire who appeared across the Greek world in the Fifth Century B.C. and taught the art of persuasion. Wise argues that it is no accident that Thrasymachus and Saruman have so much in common. Rather, he argues, Tolkien constructed his portrait of Saruman with the Sophists in mind.

Last night I read the following in Critchley (94): 

The Greek word sophistes originally meant "skilled craftsman" or "wise man", but was used to describe travelling teachers who visited Athens from the mid-fifth century BCE and acquired a negative connotation in the comedies of Aristophanes, like The Clouds, and then in the writings of Plato and, later, Aristotle.

I knew all this, just as I knew that sophistes (σοφιστής) combines σοφία, 'skill', 'craft', 'wisdom', with the agent suffix -στής. I also knew that Saruman is formed in precisely the same way, combining saru, a Mercian dialectal form of Old English searu, 'skill' or 'craft' with the agent suffix -man. Not until I read Wise and Critchley in close proximity did I make the obvious connection. 

Saruman is not attested in extant Old English, but it is more than a significant name invented by Tolkien to suggest to those who know Old English that this particular wizard is cunning and crafty. It is a translation of σοφιστής into Old English, which subtly ties the portrayal of Saruman into the moral concerns of Greek philosophy and politics. 

It is always a pleasure to see Tolkien at play in the fields of philology.

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I intend to spend more time researching this and writing it up. To my knowledge no one has observed this connection before me, but I only made the connection last night. I also know of at least one occasion where Tolkien considered the use of names based on Greek.