Source : WordNet®

one and the same
     adj : being the exact same one; not any other:; "this is the
           identical room we stayed in before"; "the themes of his
           stories are one and the same"; "saw the selfsame
           quotation in two newspapers"; "on this very spot"; "the
           very thing he said yesterday"; "the very man I want to
           see" [syn: {identical}, {one and the same(p)}, {selfsame(a)},
            {very(a)}]