Quotes About Unicellular

Of course these minimum life requirements don't fully address what it means to be alive. For even beyond all the metabolic processes, there was also an intangible essence separating the living from the not. Call it a soul, or just a need we had. Every living thing possessed a certain energy or life-force that infused even the unicellular among us.

I haven't a clue if there is life on other planets but I'd be charmed if we found a unicellular organism on Mars. It would change our whole concept of life on Earth.

By whatever means life first arose on Earth, evidence shows that it came early and flourished in abundance in complex ecosystems of unicellular life-forms. When it arrived, it began to play a critical role in preparing Earth for more life, for all Earth's future inhabitants. The next chapter explains some of the ways it served later life's needs.