When we see a great man desiring power instead of his real goal we soon recognize that he is sick, or more precisely that his attitude to his work is sick. He overreaches himself, the work denies itself to him, the incarnation of the spirit no longer takes place, and to avoid the threat of senselessness he snatches after empty power. This sickness casts the genius on to the same level as those hysterical figures who, being by nature without power, slave for power, in order that they may enjoy the illusion that they are inwardly powerful, and who in this striving for power cannot let a pause intervene, since a pause would bring with it the possibility of self-reflection and self-reflection would bring collapse.

p. 180 - What is Man? (1938)