We mostly don't get sick. Most often, bacteria are keeping us well.

Most bacteria aren't bad. We breathe and eat and ingest gobs of bacteria every single moment of our lives. Our food is covered in bacteria. And you're breathing in bacteria all the time, and you mostly don't get sick.

Bacteria mineralized the rocks; they deposited the iron. They made the geology we see.

You can find bacteria everywhere. They're invisible to us. I've never seen a bacterium, except under a microscope. They're so small, we don't see them, but they are everywhere.

My bacteria glow in the dark - no human being doesn't like that.

You live in intimate association with bacteria, and you couldn't survive without them.