What is three quotes that show Montag's character is changing and explain?

Clarisse has a lasting affect on Montag: he begins to see the world in a different way.

And then, Clarisse was gone. He didn't know what there was about the afternoon, but it was not seeing her somewhere in the world. The lawn was empty, the trees empty, the street empty, and while at first he did not even know he missed her or was even looking for her, the fact was that by the time he reached the subway, there were vague stirrings of un-ease in him. Something was the matter, his routine had been disturbed?

Montag begins to see how books enlighten humanity.

Maybe the books can get us half out of the cave. They just might stop us from making the same damn insane mistakes! I don't hear those idiot bastards in your parlour talking about it. God, Millie, don't you see? An hour a day, two hours, with these books, and maybe...