The most important subject, and the first problem of philosophy, is the restoration in man of the lost image of God; so far as this relates to science.

Should this restoration in the internal consciousness be fully understood and really brought about, the object of pure philosophy is attained.

To point out historically in reference to the whole human race, and in the outward conduct and experience of life, the progress of this restoration in the various periods of the world, constitutes the object of the Philosophy of History.

In this way, we shall clearly see how, in the first ages of the world, the original word of Divine revelation formed the firm central point of faith for the future re-union of the dispersed race of man; how later, amid the various power, intellectual as well as political, which in the middle period of the world, all-ruling nations exerted on their times according to the measure allotted to them, it was alone the power of eternal love in the Christian religion which truly emancipated and redeemed mankind: and how, lastly, the pure light of this Divine truth, universally diffused through the world, and through all science—the term of all Christian hope, and Divine promise, whose fulfilment is reserved for the last period of consummation—crowns in conclusion the progress of this restoration.

Why the progress of this restoration in human history, according to the word, the power, and the light of God, as well as the struggle against all that was opposed to this Divine principle in humanity, can be clearly described and pointed out only by a vivid sketch of the different nations, and particular periods of the world; I have alleged the reasons in various passages of the present work. With this view, I have, for the purpose of my present undertaking, availed myself, as far as these discoveries lay within my reach, of the rich acquisitions which the recent historical researches of the last ten years have furnished for the better understanding of the primitive world, its spirit, its languages, and its monuments. Besides the well-known names mentioned with gratitude in the text, of Champollion, Abel Remusat, Colebrooke, my brother, Augustus William Von Schlegel, the two Barons Humboldt; and for what relates to natural history, G. H. Schubert; I have to name with the utmost commendation for the section on China, Windischmann's Philosophy; and for what relates to the Hebrew Traditions, drawn from the esoteric doctrines and other Jewish sources of information, which are here most copiously used, I have been much indebted to a very valuable work which appeared at Frankfort, 1827, entitled "The Philosophy of Tradition," and which reflects the highest honour on its anonymous author.[34] To these I might add the names of Niebuhr, and Raumer; but in the later periods of history, we are not so much concerned about new researches on certain special points as about a right comparison of things already known, and a just conception of the whole. In the Philosophy of History, historical events can and ought to be not so much matter of discussion, as matter for example and illustration; and if on those points, where the researches of the learned into antiquity are as yet incomplete, any historical particulars should, in despite of my utmost diligence, have been imperfectly conceived or represented, yet the main result, I trust, will in no case be thereby materially impaired.

The following sketch of the subject will shew the order of the Lectures, and give a general insight into the plan of the work. The first two Lectures embrace, along with the Introduction, the question of man's relation towards the earth, the division of mankind into several nations, and the two-fold condition of humanity in the primitive world.

The subjects discussed in the seven succeeding Lectures are as follows:—the antiquity of China, and the general system of her empire—the mental culture, moral and political institutions, and philosophy of the Hindoos—the science and corruption of Egypt—the selection of the Hebrew people for the maintenance of Divine revelation in its purity—the destinies and special guidance of that nation—next an account of those nations of classical antiquity, to whom were assigned a mighty historical power, and a paramount influence over the world—such as the Persians, with their Nature-worship, their manners, and their conquests—the Greeks, with the spirit of their science, and dominion—and the Romans, together with the universal empire which they were the first to establish in Europe. The next five Lectures treat of Christianity, its consolidation and wider diffusion throughout the world—of the emigration of the German tribes, and its consequences—and of the Saracenic empire in the brilliant age of the first Caliphs. Then follows an account of the various epochs and the various stages of the progress which the modern European nations have made in science and civil polity, according to their use and application of the light of truth vouchsafed to them. So the subjects here treated are—the establishment of a Christian imperial dignity in the old German empire—the great schism of the West, and the struggles of the middle age and the period of the Crusades, down to the discovery of the New World, and the new awakening of science. The three following Lectures are devoted to the Religious Wars, the period of Illuminism, and the time of the French Revolution.

The eighteenth and concluding Lecture turns on the prevailing spirit of the age, and on the universal regeneration of society.

We have yet to make the following observations with respect to this undertaking, in which we have attempted to lay the foundations of a new general Philosophy.

The first awakening and excitement of human consciousness to the true perception and knowledge of truth has been already unfolded in my work on "the Philosophy of Life."

To point out now the progressive restoration in humanity of the effaced image of God, according to the gradation of grace in the various periods of the world, from the revelation of the beginning, down to the middle revelation of redemption and love, and from the latter to the last consummation, is the object of this Philosophy of History.

A third work, treating of the science of thought in the department of faith and nature, will with more immediate reference to the Philosophy of Language, comprehend the complete restoration of consciousness, according to the triple divine principle.

It is my wish that this work should as soon as circumstances will permit, speedily follow the two works "The Philosophy of Life," and "The Philosophy of History," now presented to the Public.

Vienna, Sept. 6th, 1828.