In his treatise On the Freedom of the Will, Schopenhauer calls the fact that we can do whatever we will a physical freedom, i.e. lack of physically present obstacles, which is not identical with moral freedom.Schopenhauer, On the Freedom of the Will, 1839, c. 1 (explanation of terms), "What is meant by freedom?". http://catdir.loc.gov/catdir/samples/cam032/98022360.pdf First chapter online Physically "free" means: one acting according only to one's will; if attempts are made to use this term to the will itself, the question arises: "is will itself willed?," "do you will the will to become so-and-so?". It is therefore a specific aspect of the claim of freedom, in which it is stressed whether the course of consciousness follows indeed in a willed way. The problem of willing the will appears in Thus spake Zarathustra, for instance in the chapter "Backworldsmen."