How we cite our quotes: (Chapter.Paragraph)
Quote #10
I don't think I figured out that he was my grandpa, not even in the deep parts of my brain. I definitely didn't make the connection between the letters in his suitcases and the letters in Grandma's dresser, even if I should have.
But I must have understood something, I must have, because why else would I have opened my left hand? (17.69-70)
Here's Oskar realizing that there's knowledge that lies outside the realm of logic. He was responding to the emotional connection to the man who turns out to be his grandpa, and that this is also a way of knowing.