The germ of each of them may have existed before, and traces of them may be detected in the literature of the ancient world, and even in the writings of mediaeval times; nay, it might not be too much to affirm that in the systems of Oriental Superstition, and in the Schools of Grecian Skepticism, several of them were more fully taught in early times than they have yet been in Modern Europe, and that the recent attempts to reconstruct and reproduce them in a shape adapted to the present stage of civilization, have been poor and meagre in comparison with those more ancient efforts of unenlightened reason.

What modern system of Skepticism can rival that of Sextus Empiricus?
What code of Pantheism, French or German, can be said to equal the mystic dreams of the Vedanta School?
What godless theory of Natural Law can compete with the Epicurean philosophy, as illustrated in the poetry of Lucretius?
The errors of these ancient systems have been revived even amidst the light of the nineteenth century, and prevail to an extent that may seem to justify the apprehension, frequently expressed on the Continent of late years, of the restoration of a sort of Semi-Paganism in Modern Europe; and it is still necessary, therefore, for the defence of a pure Theism, to reexamine those ancient forms of error which have reaeppeared on the scene after it might have been supposed that they had vanished for ever.

For the very tenacity with which they cleave to the human mind, and their perpetual recurrence at intervals along the whole course of the world's history, show that there must be something in the wants, or at least in the weaknesses of our nature, which induces men to tolerate and even to embrace them.

But the chief danger, as we conceive, lies in those new, or at least newly organized, theories that have only recently received their full development in the Inductive and Scientific pursuits which constitute the peculiar glory of modern times; and which, commencing with the era of Bacon and Descartes, and gradually matured by Newton, Leibnitz, and their successors, have at length issued in the construction of a solid fabric of Science.

To Theism there is no danger in Science, in so far as it is true, for all truth is self-consistent and harmonious; but there may be much danger in the use that is made of it, or in the spirit in which it is applied.