I surely need not warn you, after the observations which I made in my Introductory Lectures, on the Laws and Objects of Physical Inquiry in General, that every _classification_ has reference only to our mode of considering objects; and that, amid all the varieties of systems which our love of novelty, and our love of distinction, or our pure love of truth and order may introduce, the phenomena themselves, whether accurately, or inaccurately classed, continue unaltered. The mind is formed susceptible of certain affections. These states or affections we may generalize more or less; and, according to our generalization, may give them more or fewer names. But whatever may be the extent of our vocabulary, the mind itself,--as independent of these transient designations, as He who fixed its constitution,--still continues to exhibit the same unaltered susceptibilities, which it originally received; as the flowers, which the same divine Author formed, spring up, in the same manner, observing the same seasons, and spreading to the sun the same foliage and blossoms, whatever be the system and the corresponding nomenclature according to which botanists may have agreed to rank and name their tribes. The great Preserver of nature has not trusted us, with the dangerous power of altering a single physical law which He has established, though He has given us unlimited power over the _language_ which is of our own creation. It is still with us, as it was with our common sire in the original birthplace of our race. The Almighty presents to us all the objects that surround us, wherever we turn our view; but He presents them to us, only that we may give them names. Their powers and susceptibilities they already possess, and we cannot alter these, even as they exist in a single atom.