"[...] at the end of each day I would take the book to bed with me and read through the pages of my life[.]" ( 18)
"I never thought of my books as being special, only necessary" (28)
These books were necessary because it was the only way for him to communicate but weren't special because he wanted to be able to talk. Although he wanted to communicate he could not rbring himself to talk, so the book was his only choice.
The reason he would never erase a sentence, or write 2 ideas on one page is that he thinks that each idea is important and deserves the same importance as every other thought.
"I wouldn't see her again until breakfast, and then after work we'd go our separate ways and not see each other until it was time to fall asleep, was I worried about her, putting all of her life into her life story, no, I was so happy for her, I remembered the feeling she was feeling, the exhilaration of building the world anew" (119-120)
This is after Oskar's grandmother finished writing her life story.
"[...] 'My life,' she said so proudly, 'I just made it up to the present moment. Just now. I'm all caught up with myself. The last thing I wrote was 'I'm going to show him what I've written. I hope he loves it.' I picked up the pages and wandered through them, trying to find the one on which she was born, her first love, when she last saw her parents, and I was looking for Anna, too, I searched and searched, I got a paper cut on my forefinger and bled a little flower onto the page on which I should have seen her kissing somebody, but this was all I saw: [blank paper]." (120).
"She's at home now, writing her life story, she's typing while I'm leaving, unaware of the chapters to come. It was my suggestion, and at the time I thought it was a very good one, I thought maybe if she could express herself rather than suffer herself, if she had a way to relieve the burden, she lived for nothing more than living, with nothing to get inspired by, to care for, to call her own..."(119)