Nietzsche's philosophy is a philosophy of lightness, a lightness which doesn't consist in breaking with gravity but in controlling it: being light is being able to take charge of life, ie bearing and loving it, wanting it.
This book is first devoted to Greek lightness for Nietzsche finds in Ancient Greece the pattern for an alleviation which enables to unload one's drives without denying oneself. The study of Greek culture is thus the starting point of a close analysis of the "human, all-too-human" things, ie an inquiry whose orientation is definitely antimetaphysical, ie antiplatonic,...