假如我轻若尘埃小说讲的什么

假如我轻若尘埃，不如燃烧成灰烬。　　I would rather be ashes than dust.　　我宁愿是燃烧过后的灰烬，也不愿作地上的尘土。　　I would rather that my spark should burn out in a brilliant blaze than it should be stifled by dry-rot.