But structures are not eternal. With the passage of time they crumble or solidify, both degenerations in opposite extremes that are the result of the apparition of a new element in the system: silence. The difference is too vast to be integrated, from pure creation through the addition of an element of absorption we obtain decay. "Waste, decline, degeneration is not something to be condemned in itself: it is a necessary consequence of life, of the growth of life. The appearance of decadence is as necessary as any rise and advance of life: we have no way of eliminating it."