The results of the Science of Language are enormous. There is no sphere of intellectual activity which has not felt more or less the influence of this new science. Nor is this to be wondered at. Language is the organ of all knowledge, and though we flatter ourselves that we are the lords of language, that we use it as a useful tool, and no more, believe me there are but few who can maintain their complete independence with respect to language, few who can say of her, Ἔχω Λαΐδα, οὐκ ἔχομαι. To know language historically and genetically, to be able more particularly to follow up the growth of our technical terms to their very roots, this is in every science the best means to keep up a living connection between the past and the present, the only way to make us feel the ground on which we stand. Let us begin with what is nearest to us, _Philology_. Its whole character has been changed as if by magic. The two classical languages, Greek and Latin, which looked as if they had fallen from the sky or been found behind the hedge, have now recovered their title-deeds, and have taken their legitimate place in that old and noble family which we call the Indo-European, the Indo-Germanic, or by a shorter, if not a better name, the Aryan. In this way not only have their antecedents been cleared up, but their mutual relationship, too, has for the first time been placed in its proper light. The idea that Latin was derived from Greek, an idea excusable in scholars of the Scipionic period, or that Latin was a language made up of Italic, Greek, and Pelasgic elements, a view that had maintained itself to the time of Niebuhr, all this has now been shown to be a physical impossibility. Greek and Latin stand together on terms of perfect equality; they are sisters, like French and Italian:-- “Facies non omnibus una, Nec diversa tamen qualem decet esse sororum.”