Full Idea
Nietzsche does not think philosopher exists to make us better human beings - but it can make us more profound ones.
Gist of Idea
Nietzsche thinks philosophy makes us more profound, but not better
Source
report of Friedrich Nietzsche (Works (refs to 8 vol Colli and Montinari) [1885]) by Keith Ansell Pearson - How to Read Nietzsche Intro
Book Reference
Ansell Pearson,Keith: 'How to Read Nietzsche' [Granta 2005], p.6
A Reaction
What is the point of being more 'profound' if that isn't 'better'? Are we sure that Kant is more 'profound' than a Yanomamo Indian? Personally I think philosophy tends to produce moral improvement, but I have seen a few striking counterexamples.