Above all war. War has always been the great policy of all spirits who have penetrated too far into themselves or who have grown too deep; a wound stimulates the recuperative powers.
 Friedrich Nietzsche, Twilight of the Idols (1889). copy citation

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Author Friedrich Nietzsche
Source Twilight of the Idols
Topic war power
Date 1889
Language English
Reference
Note Translated by Anthony M. Ludovici
Weblink https://www.gutenberg.org/files/52263/52263-h/52263-h.htm

Context

“Surplus power, alone, is the proof of power.—A transvaluation of all values,—this note of interrogation which is so black, so huge, that it casts a shadow even upon him who affixes it,—is a task of such fatal import, that he who undertakes it is compelled every now and then to rush out into the sunlight in order to shake himself free from an earnestness that becomes crushing, far too crushing. This end justifies every means, every event on the road to it is a windfall. Above all war. War has always been the great policy of all spirits who have penetrated too far into themselves or who have grown too deep; a wound stimulates the recuperative powers. For many years, a maxim, the origin of which I withhold from learned curiosity, has been my motto:
increscunt animi, virescit volnere virtus.
At other times another means of recovery which is even more to my taste, is to cross-examine idols.” source