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A living cell requires energy not only for all its functions, but also for the maintenance of its structure.

Without electricity, the air would rot.

Cells will die in minutes to days if they lack their genetic information system. They will not evolve, they will not replicate, and they will not live.

Energy and persistence conquer all things.

Creation destroys as it goes, throws down one tree for the rise of another. But ideal mankind would abolish death, multiply itself million upon million, rear up city upon city, save every parasite alive, until the accumulation of mere existence is swollen to a horror.

Human beings are just animals who will just eat and take advantage of any source of energy until it runs out, and then there'll be catastrophe.

The ecosystem of our world is a closed system: it would run out of gas, collapse of its own weight.

Nature creates while destroying, and doesn't care whether it creates or destroys as long as life isn't extinguished, as long as death doesn't lose its rights.

As the scene of life would be more the cold emptiness of space than the warm, dense atmosphere of planets, the advantage of containing no organic material at all, so as to be independent of both these conditions, would be increasingly felt.

If every human being disappeared off the face of the earth in an instant, the earth would still keep spinning and the planet would develop new life forms.