What I have rather neglected is the grammatical construction of them, and especially the many various inflections of the verbs." To repair this defect he wisely resolved to bestow some time every morning on the perusal of the Greek Grammar of Port Royal.
Thus we see that at an age when many men are beginning to forget their Greek, Gibbon was beginning to learn it.

Was this early deficiency ever repaired in Greek as it was in Latin?
I think not.

He never was at home in old Hellas as he was in old Rome.

This may be inferred from the discursive notes of his great work, in which he has with admirable skill incorporated so much of his vast and miscellaneous reading.

But his references to classic Greek authors are relatively few and timid compared with his grasp and mastery of the Latin.