We take a sight at a condition in life, and say we have studied it; our most elaborate view is no more than an impression.
我们瞥见人生的一种境况,便说自己研究过它;即便最详尽的看法,也不过是一种印象。
— Robert Louis Stevenson · Virginibus Puerisque, and Other Papers · Crabbed Age and Youth —