to understand how the abstrusest metaphysical assertions of a philosopher have been arrived at, it is always well (and wise) to first ask oneself: "What morality do they (or does he) aim at?" Accordingly, I do not believe that an "impulse to knowledge" is the father of philosophy; but that another impulse, here as elsewhere, has only made use of knowledge (and mistaken knowledge!) as an instrument.
Philosophy isnt the "impulse to knowledge" according to Nietzsche but instead a refkection of the "morality they aim at"