the literal sense are too varied, and depend too much on special circumstances, for it to be possible to reduce the art of detecting them to definite rules. Only one general principle can be laid down, and that is, that when the literal sense is absurd, incoherent, or obscure, or in contradiction with the ideas of the author or the facts known to him, then we ought to presume an oblique sense.
In order to determine this sense, the procedure is the same as for studying the language of an author: we compare the passages in which the expressions occur in which we suspect an oblique sense, and look to see whether there is not one where the meaning may be guessed from the context. A celebrated instance of this procedure is the discovery of the allegorical meaning of the Beast in the Apocalypse. But as there is no certain method of solving these problems, we never have a right to say we have discovered all the hidden meanings or seized all the allusions contained in a text; and even when we think we have found the sense, we shall do well to draw no inferences from a necessarily conjectural interpretation.
On the other hand, it is necessary to guard against the temptation to look for allegorical meanings everywhere, as the neo-Platonists did in Plato's works and the Swedenborgians in the Bible. This attack of hyper-hermeneutic is now over, but we are not yet safe from the analogous tendency to look for allusions everywhere. Investigations of this kind are always conjectural, and are better calculated to flatter the vanity of the interpreter than to furnish results of which history can make use.
V. When we have at