Nothing is more conservative than a bacterium.

The myosin in our own skeletal muscles is more closely related to the myosin driving the flight muscles of that irritating housefly buzzing around your head than it is to the myosin in the muscles of your own sphincters

Viruses and bacteria are much better at evolving than we are, it would seem.

Well basically, [evolution] is a scientific theory. It plays a very major role in biological research. Since it is where science is, it is what should be taught in public schools.

If you on't like bacteria, you're on the wrong planet.

We’re organisms; we’re conceived, we’re born, we live, we die, and we decay. But as we decay we feed the world of the living: plants and bugs and bacteria.