“There is a thin line that separates life from death, but once it's crossed, it becomes as large as an ocean, and so treacherous that it’s impossible to cross back.”

“Every woman has a line in their relationship. It may be imaginary, but it's there. Every woman's line is different. Some actions may weigh heavier on one person than another, but in the end it's all the same. Cross that line and the consequences can be life changing and devastating. It's the type of line that once you cross it, you can never go back.”

“Some day you cross this thin line and you really realize that we need to protect ourselves from ourselves.”

“The enemy stopped shooting, and that strict, menacing, inaccessible, and elusive line that separates two enemy armies became all the more clearly felt. “One step beyond that line, reminiscent of the line separating the living from the dead, and it’s the unknown, suffering, and death. And what is there? who is there? there, beyond this field, and the tree, and the roof lit by the sun? No one knows, and you would like to know; and you’re afraid to cross that line, and would like to cross it; and you know that sooner or later you will have to cross it and find out what is there on the other side of the line, as you will inevitably find out what is there on the other side of death. And you’re strong, healthy, cheerful, and excited, and surrounded by people just as strong and excitedly animated.” So, if he does not think it, every man feels who finds himself within sight of an enemy, and this feeling gives a particular brilliance and joyful sharpness of impression to everything that happens in those moments.”

“Hazel had read enough books to know that a line like this one is the line down which your life breaks in two. And you have to think very carefully about whether you want to cross it, because once you do it’s very hard to get back to the world you left behind. And sometimes you break a barrier that no one knew existed, and then everything you knew before crossing the line is gone. But sometimes you have a friend to rescue. And so you take a deep breath and then step over the line and into the darkness ahead.”

“Sure, I’m gray-shading the line that separates stable and crazy, but the point is, there is a line. And I haven’t completely crossed over to lunatic.”