Barry Convex proclaims Lorenzo de Medici as the author of the two famous ocular quotes. The first, "love comes in at the eye", is from a William Butler Yeats poem called "A Drinking Song". The second, "the eye is the window of the soul", is not definitively attributable to any one source. Seemingly similar variations exist in Cicero, European proverbs and the Gospel of Matthew.
The goof item below may give away important plot points.
Crew or equipment visible
When Max shoots Moses in his office, the underside of Moses' elbow explodes with blood where he is supposedly shot, only the special effects exploding blood pack is clearly visible underneath, plastic and all.