In order to comprehend what development is, what may be called two different states must be distinguished. The first is what is known as capacity, power, what I call being-in-itself (_potentia_, _δύναμις_); the second principle is that of being-for-itself, actuality (_actus_, _ἐνέργεια_). If we say, for example, that man is by nature rational, we would mean that he has reason only inherently or in embryo: in this sense, reason, understanding, imagination, will, are possessed from birth or even from the mother’s womb. But while the child only has capacities or the actual possibility of reason, it is just the same as if he had no reason; reason does not yet exist in him since he cannot yet do anything rational, and has no rational consciousness. Thus what man is at first implicitly becomes explicit, and it is the same with reason. If, then, man has actuality on whatever side, he is actually rational; and now we come to reason. What is the real meaning of this word? That which is in itself must become an object to mankind, must arrive at consciousness, thus becoming for man. What has become an object to him is the same as what he is in himself; through the becoming objective of this implicit being, man first becomes for himself; he is made double, is retained and not changed into another. For example, man is thinking, and thus he thinks out thoughts. In this way it is in thought alone that thought is object; reason produces what is rational: reason is its own object. The fact that thought may also descend to what is destitute of reason is a consideration involving wider issues, which do not concern us here. But even though man, who in himself is rational, does not at first seem to have got further on since he became rational for himself—what is implicit having merely retained itself—the difference is quite enormous: no new content has been produced, and yet this form of being for self makes all the difference. The whole variation in the development of the world in history is founded on this difference. This alone explains how since all mankind is naturally rational, and freedom is the hypothesis on which this reason rests, slavery yet has been, and in part still is, maintained by many peoples, and men have remained contented under it. The only distinction between the Africans and the Asiatics on the one hand, and the Greeks, Romans, and moderns on the other, is that the latter know and it is explicit for them, that they are free, but the others are so without knowing that they are, and thus without existing as being free. This constitutes the enormous difference in their condition. All knowledge, and learning, science, and even commerce have no other object than to draw out what is inward or implicit and thus to become objective.