"Blue is the color of longing for the distance you never arrive in, for the blue world."
"The blue at the farthest reaches of the places where you see from miles, the blue of distance. This light that doesn’t touch us, doesn’t not travel the whole distance, the light that gets lost."--Rebecca Solnit

“蓝色代表了你对自己永远无法到达的距离的渴望，代表了对蓝色世界的渴望。” 
“你在数英里内目光所及的最远之处的蓝色，是远方的蓝色。这种光线并未触碰到我们，它并没有一路照射 过来，这是一种逸散之光。”  —— 丽贝卡 索尔尼

标题into the blue,  有抵达遥远未知，消失在远方的意思。