Philosophy and The Future

In some passages of Beyond Good and Evil, the phrase 'philosophy of the future' seems to mean 'philosophy at some later date'.  In contrast, in #212, Nietzsche's characterization of the philosopher as "being, of necessity, a man of tomorrow", is instead suggesting that the 'future' is an essential dimension of philosophical activity, and, hence, is 'of' the latter, rather than the converse.  More precisely, as creators, these "furtherers of men", who "know of a new greatness of men", are not merely inhabitants of some future, they are its makers.