Agent Smith: I'd like to share a revelation that I've had during my time here. It came to me when I tried to classify your species, and I realised that you're not actually mammals. Every mammal on this planet instinctively develops a natural equilibrium with the surrounding environment; but you humans do not. You move 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. Human beings are a disease, a cancer on this planet, you are a plague, and we...are the cure.
Agent Smith: Can you hear me, Morpheus? I'm going to be honest with you. I... Hate this place, this zoo, this prison, this reality, whatever you want to call it. I can't stand it any longer. It's the smell, if there is such a thing. I feel saturated by it. I can taste your stink. And every time I do I feel I have somehow been infected by it. It's repulsive, isn't it? I must get out of here. I must get free and in this mind is the key, my key. Once Zion is destroyed there is no need for me to be here, don't you understand? I need the codes. I have to get inside Zion, and you have to tell me how. You're going to tell me, or you're going to die.