The quality of the will to power is, precisely, growth. Achievement is its cancellation. To be, the will to power must increase with each fulfillment, making the fulfillment only a step to a further one. The vaster the power gained the vaster the appetite for more.
ATTRIBUTION:
Ursula K. Le Guin (b. 1929), U.S. author. The Lathe of Heaven, ch. 9 (1971).