"I would like to share with you a revelation that I've had during my time here. It came to me when I tried to classify your species. I realized you're not actually mammals.

Every mammal in this planet, instinctively develops a natural equilibrium with the surrounding environment, but you humans do not. You move in to an area and you multiply, and multiply until every natural resource is consumed, and the only way you can survive is to spread to another area.

There is another organism on this planet that follows the same pattern. Do you know what it is? A virus. The Human Being is an Hearth disease, a cancer of this planet. You're a plague. We... are the cure.

Agent, to Morpheus, The Matrix