This quote is about the importance of vulnerability in relationships. It suggests that two people will never truly be close until they make themselves open to each other emotionally. They need to “see into each other’s cracks” and reveal their innermost thoughts and feelings. Until they share this type of vulnerability, they will only have a superficial understanding of each other, like seeing someone through a window but not being able to look past the window shade. However, when they open up and let each other in, the relationship will be filled with much more light and understanding.