System is Yr Enemy

You have to let it all go, Neo. Fear, doubt, and disbelief. Free your mind.

Neo: I thought it wasn't real 

Morpheus: Your mind makes it real 

Neo: If you're killed in the matrix, you die here? 

Morpheus: The body cannot live without the mind

The Matrix is a system, Neo. That system is our enemy. But when you're inside, you look around, what do you see? Businessmen, teachers, lawyers, carpenters. The very minds of the people we are trying to save. But until we do, these people are still a part of that system and that makes them our enemy. You have to understand, most of these people are not ready to be unplugged. And many of them are so inured, so hopelessly dependent on the system, that they will fight to protect it.