You are not going to be able to get a simplistic "Janet and John" answer to this one, you need to actually go and do the reading.
Start with "Beyond Good and Evil" and then "Thus Spoke Zarathustra," Bernard Shaw's "Man and Superman" might be of some interest too, between them they should give you all you need to begin understanding, Nietzsche complex theory of social structure and engineering.

And I wonder what sort of music Descartes liked best and how did Pliny the Elder like his eggs? The answer to all of these questions is, how the (bleep) should we know?