George Orwell: Burmese Days

It was so important that she should understand something of what his life in this country had been; that she should grasp the nature of the loneliness that he wanted her to nullify. And it was so devilishly difficult to explain. It is devilish to suffer from a pain that is all but nameless. Blessed are they who are stricken only with classifiable diseases! Blessed are the poor, the sick, the crossed in love, for at least other people know what is the matter with them and will listen to their belly-achings with sympathy. But who that has not suffered it understands the pain of exile?