However, negative arguments and circumstantial evidence are not all, in such a matter, which we have a right to require. They are not the highest kind of proof possible. Those who have circumnavigated the island have a right to be certain: have we ever ourselves even fallen in with any one who has? And as to the common belief, what is the proof that we are not all of us believing it on the credit of each other? And then, when it is said that every one believes it, and everything implies it, how much comes home to me personally of this “every one” and “everything”? The question is, Why do I believe it myself? A living statesman is said to have fancied Demerara an island; his belief was an impression; have we personally more than an impression, if we view the matter argumentatively, a lifelong impression about Great Britain, like the belief, so long and so widely entertained, that the earth was immovable, and the sun careered round it? I am not at all insinuating that we are not rational in our certitude; I only mean that we cannot analyze a proof satisfactorily, the result of which good sense actually guarantees to us. 2. Father Hardouin maintained that Terence’s Plays, Virgil’s “Æneid,” Horace’s Odes, and the Histories of Livy and Tacitus, were the forgeries of the monks of the thirteenth century. That he should be able to argue in behalf of such a position, shows of course that the proof in behalf of the received opinion is not overwhelming. That is, we have no means of inferring absolutely, that Virgil’s episode of Dido, or of the Sibyl, and Horace’s “Te quoque mensorem” and “Quem tu Melpomene,” belong to that Augustan age, which owes its celebrity mainly to those poets. Our common-sense, however, believes in their genuineness without any hesitation or reserve, as if it had been demonstrated, and not in proportion to the available evidence in its favour, or the balance of arguments.