Pain is an interesting and off-putting thing. Few if any things in life concentrate our attention so completely and terribly, and few things are more boring to listen to or read about.
Maybe, speaking of pain I have made the colors too dark, but the picture is not that grim. All kinds of our feelings and emotions play a vital role when it comes to thinking and learning - to being conscious. I could have chosen anything more appealing - say, pride, satisfaction, love - whatever. It was the relentlessness and severity, with which pain invades our mind, that made me write of it.