Harry Callahan: I know what you're thinking."Did he fire six shots or only five?" Well, to tell you the truth, in all this excitement I kind of lost track myself. But being as this is a .44 Magnum, the most powerful handgun in the world, and would blow your head clean off, you've got to ask yourself a question: Do I feel lucky? Well, do ya punk?
De Georgio: Morning, Harry.
Harry Callahan: Morning, fatso. Bressler wants to see you.
De Georgio: You're a sweet man, Harry.
Harry Callahan: Where's the girl?
The Killer: You tried to kill me!
Harry Callahan: If I tried to do that your head would be splattered all over this field - now where's the girl?
Harry Callahan: What are you going to do with those?
Doctor: Going to cut your pants off.
Harry Callahan: No. I'll take them off.
Doctor: It'll hurt.
Harry Callahan: $29.50, let it hurt.
Harry Callahan: Well I'm all broken up about that man's rights.
Answer: If you watch closely, you see the killer throw him to the side and then take aim at Harry, at which point Harry shoots him. Since we don't see the kid again, we can assume he ran away as soon as the killer let him go.
Not true. Actually, Harry sees the boy, and appears to be lowering his weapon, and then blasts Scorpio... and when the bullet hits him, he is still holding the boy hostage... It is only after Harry shoots him, and he falls to the ground, that we see the boy running away.