The power to act intentionally is a power to change the world. It differs from other powers to affect change in that the change is of a particular kind. It is a change through thought. Paradigmatically, it begins with the negation of what is as not as it is to be and the setting of an action concept as to be realized. The pursuit of the end is the realizing of the concept. If all goes well, the process culminates in my knowledge that my deed is done. The power to act is, in this sense, the power of reason to change the world according to its concept and to recognize this change as its works. The traditional name for this form of cognition is “practical knowledge”. In the contemporary literature this notion is mostly discussed under the question how the agent knows, what she will do or what she is doing. This goes together with the tendency to conceive of practical knowledge under the title of self-consciousness in the sense of the transparency of thought. The paper argues that this is a mistake. The notion of practical knowledge is not intelligible as long as one focuses only upon the prospective perspective of intentions for the future or intentions in action and leaves knowing what one has done aside. With my knowledge of my done work a kind of self-consciousness enters the scene whose object is not myself, but another in which I see the reality of my will
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