The Heart is a Lonely Hunter
How we cite our quotes:
Now she suddenly just knew that she knew about her Dad. He was lonesome and he was an old man. (2.1.16)
Poor Mr. Kelly. Though we don't see much of him, this brief glimpse tells us that he's probably one of the most lonely and depressed characters in the book. But it takes Mick a while to realize this. It's as if Mr. Kelly has been so lonesome for so long that no one even notices anymore.
If he stayed at home he restlessly walked the floor. He sat on the edge of the unmade bed and gnawed savagely at the broken, dirty ends of his fingernails. [...] The loneliness in him was so keen that he was filled with terror. (2.4.21)
This loneliness is scary business. Wait. Why? We can imagine loneliness being sad or depressing. But what about being alone is scary?
For something had happened in this year. He had been left in an alien land. Alone. He had opened his eyes and around him there was much he could not understand. He was bewildered. (2.7.19)
Though this section describes Singer, it totally fits all the characters. Singer has been living in a little cocoon for ages, but now, without Antonapoulos, he has to face a new, scary, totally strange world. He has lost his security blanket, and now he'll have to face everything alone.