PLEASE HELP ME When an author introduces a new character in a short story, he or she must quickly establish the character's key traits. In this portion of the narrative, the author misses an opportunity to develop Mr. Valentine. Rewrite this section of the story to better establish Mr. Valentine as a complex character.

Here's the passage:

Promptly at 8:00 a. m., the doorbell rang. Letting out another deep sigh, Paul pulled himself up off the couch and walked to the door. Opening it, he discovered a small, shriveled, white-haired man staring up at him with piercing blue eyes.

"Mr. Candor?" the man said in a voice that was much larger than he was.

"Uh, no, sir. My father isn't home right now. I can give you his work number if you'd like to call him," replied Paul.

"Mr. Paul Candor is who I'm looking for," said the man. "Is that you?"

"Oh, yes, sir. That's me. You must be my tutor," said Paul, in a voice that didn't hide his skepticism.

"Yes, I'm Mr. Valentine. Let's get to work."

Paul welcomed Mr. Valentine into the house and they sat at the kitchen table and began to work.