..there is nothing worse than the feeling that no one cares whether we exist or not, that no one is interested in what we have to say about life, and that the world can continue turning without our awkward presence. I began to imagine how many millions of people were, at that moment, feeling utterly useless and wretched—however rich, charming, and delightful they might be—because they were alone that night, as they were yesterday, and as they might well be tomorrow.
Paulo Coelho