What causes [fragmentation] if not a need to act that specializes us and limits us to the horizon of a particular activity? Even if it turns out to be for the general interest (which generally isn't true), the activity that subordinates each of our aspects to a specific result suppresses our being as an entirety. Whoever acts substitutes a particular end for what he or she is, as a total being.

p. xxvi - On Nietzsche (1945)