As regards the celebrated struggle for life, it seems to me for the present to have been rather asserted than proved. It does occur, but as the exception; the general aspect of life is not hunger and distress, but rather wealth, luxury, even absurd prodigality -- where there is a struggle it is a struggle for power.
The Case of Wagner: The Twilight of the Idols; Nietsche Contra Wagner; [The Antichrist] (ed. 1896)