*INTRODUCTION*

second one determined through itself in form; and a third one determined through itself in content. If there are still other propositions in the science of knowledge, they must be determined both in regard to form and content by the fundamental principle. Hence, a science of knowledge must determine the form of all its propositions, in so far as they are separately considered. But such a determination of the separate propositions is only thus possible: that they reciprocally determine each other. But each proposition must be *perfectly* determined, that is, its form must suit only its and no other content, and its content must only suit its and no other form; for else such a proposition would not be *equal* to the first principle, in so far as that first principle is certain, and hence would not be certain. If, nevertheless, all the propositions of a science of knowledge are to be different, which they must be if they are to be many propositions and not one proposition, then no proposition can obtain its complete determination otherwise than through a single one of all propositions. And thus the whole series of propositions becomes determined, and no proposition can occupy another place in the system than that which it occupies. Each proposition in the science of knowledge has its position determined by a determined other proposition, and on its part determines the position of a determined third proposition. Hence, the science of knowledge establishes itself the form of its whole for itself

This form of the science of knowledge is neces-