For the first half of geological time our ancestors were bacteria. Most creatures still are bacteria, and each one of our trillions of cells is a colony of bacteria.

Summary

This quote emphasizes the profound influence bacteria have had on life throughout Earth's history. It suggests that for a significant period, our early ancestors were single-celled organisms like bacteria. Additionally, it highlights the remarkable fact that even now, most of the living creatures on our planet are bacteria. More intriguingly, it reveals that every cell within our bodies is actually a collective of bacteria working together. Overall, the quote underscores the deep interconnectedness between humans, other organisms, and the bacterial world.

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