All knowledge is one, - Isaac Asimov

Durante todo o treinamento que [o floriano] recebeu, ao longo de todos os estudos nos quais se saiu tão bem, nunca se esqueceu de que os nobres eram homens.

He also said, "the soft bonds of love are indifferent to life and death. They hold through time so that yesterday's love is part of today's and the confidence in tomorrow's love is also part of today's. And when one dies, the memory lives in the other, and is warm and breathing. And when both die-I almost believe, rationalist though I am-that somewhere it remains, indestructible and eternal, enriching all of the universe by the mere fact that once it existed."
And he also wrote: "At various times of life, we find ourselves with a handful of blocks of different sizes and shapes, out of which we can build some aspect of life, and it behooves us to build it as beautifully as we can ..."

Human beings, in terraforming a world, leave out the thorns and thistles, whatever they may be, and human beings then have to labor to keep the world going. It isn't a self-supporting organism as Gaia is. It is rather a miscellaneous collection of Isolates and the collection isn't miscellaneous enough to allow the ecological balance to persist indefinitely. If humanity disappears, and if its guiding hands are removed, the world's pattern of life inevitably begins to fall apart. The planet unterraforms itself.