I wasn't deathly depressed, but I wasn't happy either, floating instead in some feeling between the two. I suffered more because I had no idea that these contradictory feelings could and did coexist in many people.
-- Baek Sehee (Prologue)

Importance: This quote outlines the type of depression Sehee deals with throughout the book. Because her depression is not so extreme that she is actively suicidal, she thinks that she does not really have depression. As this quote shows, she was unaware that such a type of depression could even exist.

My father beat my mother. They have this euphemism for it now, 'marital disputes', but it's just violence, isn't it?
-- Baek Sehee (1: Slightly Depressed)

Importance: Schee is discussing her family life growing up here, and recalls the violence her father brought to the house. Sehee is critical of the euphemisms people use to describe domestic violence, because they hide the reality and danger of the situation.

You've already defined...
-- The Psychiatrist (2: Am I a Pathological Liar)