Yōko Ogawa said this quote

Since that time, I've had many similar moments, and I can never hear the words family and home without feeling that they sound strange, never simply hear them and let them go. When I stop to examine them, though, the words seem hollow, seem to rattle at my feet like empty cans.

~ Yōko Ogawa

Math has proven the existence of God, because it is absolute and without contradiction; but the devil must exist as well, because we cannot prove it

~ Yōko Ogawa

He preferred smart questions to smart answers.

~ Yōko Ogawa

Soon after I began working for the Professor, I realized that he talked about numbers whenever he was unsure of what to say or do. Numbers were also his way of reaching out to the world. They were safe, a source of comfort.

~ Yōko Ogawa