Among his other positive traits, Atticus Finch is a loving and concerned father. Following the death of his wife, Atticus is left a single parent; he never remarries, but he shows his love for his children in many ways. When Boo saves his children from the clutches of Bob Ewell, Atticus is grateful. He is quite aware that they owe Boo their lives.
"Thank you for my children, Arthur" he said.
He is also willing to allow Jem to face the circumstances of Bob's death if he is responsible.
"If this thing's hushed up it'll be a simple denial to Jem of the way I've tried to raise him. Sometimes I think I'm a total failure as a parent, but I'm all they've got... if I've connived at something like this, frankly, I couldn't meet his eye, and the day I can't do that I'll know I've lost him. I don't want to lose him and Scout, because they're all I've got."
Even after Sheriff Tate repeats to Atticus that Jem did not kill Bob, Atticus is unsure.
"If they hear me saying downtown something different happened--Heck, I won't have them anymore. I can't live one way in town and another way in my home."
In my book, this quote is on page 89:
“Uncle Jack, please promise me somethin‘, please sir. Promise you won’t tell Atticus about this. He—he asked me one time not to let anything I heard about him make me mad, an’ I’d ruther him think we were fightin‘ about somethin’ else instead. Please promise…”
When you use a quote, think about what the quote shows about the character you are discussing, this shows a need Atticus has, see if you can identify it. This one occurs after Scout gets in trouble for fighting with her cousin.
Another way to think of what quotes to include might be to go to chapter 22. I think you could argue that Atticus needs the kids because they believe in him and support him. Not even his sister can do that. Chapter 22 shows the kids curious about why the trial didn't work out for them.