Note 813 — Chapter XVI · The Method of Teaching in Practice.

English speaking students have at first great difficulties in grasping the rule of the object, because neither the article nor the noun shows any case ending. However, it can be explained easily with pronouns. Thus say: “Who is there? Who is subject. Whom did you see? Whom is object.—He is there. I saw him. It would be bad English to say: Who did you see, or I saw he. So it is bad Latin to say: Vulpes viderat persona.” These examples of whom and him are especially fitted, as they show an ending similar to the Latin.