Both Uses of

profound

in

To Kill a Mockingbird

They persisted in pleading Not Guilty to first-degree murder, so there was nothing much Atticus could do for his clients except be present at their departure, an occasion that was probably the beginning of my father's profound distaste for the practice of criminal law.
p. 5..9 (definition 1) *

profound = intense

Each child was supposed to clip an item from a newspaper, absorb its contents, and reveal them to the class. This practice allegedly overcame a variety of evils: standing in front of his fellows encouraged good posture and gave a child poise; delivering a short talk made him word-conscious; learning his current event strengthened his memory; being singled out made him more than ever anxious to return to the Group. The idea was profound, but as usual, in Maycomb it didn't work very well.
p. 327..1 (definition 2) *

profound = deep or far-reaching in intellect or consequence

Definitions:

(2) (profound as in: profound idea)
deep or far-reaching in intellect or consequence