"Neo. Like everyone else, you were born into bondage, born inside a prison that you cannot smell, taste, or touch. A prison for your mind. Unfortunately, no one can be told what the Matrix is. You have to see it for yourself. "
-- The Matrix (1999)
"You're here because you know something. What you know you can't explain -- but you feel it. You've felt it your entire life; that there's something wrong with the world; you don't know what it is, but it's there, like a splinter in your mind, driving you mad. It is this feeling that has brought you to me. Do you know what I'm talking about?"
-- The Matrix - 1999
Not necessarily my favorite but its one of the most popular associated by those who have seen the film: