Replying to Atticus Finch

so my english class just got done reading To Kill a Mocking bird, and now we have to write literary essays on one character. i chose Atticus because hes the easiest. my essay is going pretty good so far, but im having trouble finding quotes identifying Atticus' intelligence. they font have to be said by him, just something that proves he knows his shit.

so anyone that knows whats good, please tell me, cause this is gettin to me a little bit.