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.

Ursula K. Le Guin (1929-2018) American writer

The Lathe of Heaven, ch. 9 (1971)
    (Source)