A certain man (ti). Matthew 8:19 calls him "a scribe." Luke 9:57-60 ; Matthew 8:19-22 , but not in Mark and so from Q or the Logia. Wherever you go (opou ean aperch) is the present middle subjunctive with the indefinite relative adverb ean, common Greek idiom. See on Matthew for "holes," "nests," "Son of man." The idiom "where to lay his head" (pou thn kepalhn klinh) is the same in both, the deliberative subjunctive retained in the indirect question. "Jesus knows the measure of the scribe's enthusiasm" (Plummer). The wandering life of Jesus explains this statement.