"there is one disadvantage to loneliness that is not as easy to recognize as the others. this disadvantage is that, due to constantly staying indoors, our bodies become so sensitive to external influences that we fall ill at the slightest draft. because of being perpetually withdrawn into our corner, our mental state becomes so sensitive that the most trivial events, words, and even mere gestures unsettle us, make us ill, or wound us. whereas someone who is constantly among crowds doesn't even take notice of these things."