Sun Will Never Set is the fourth collection of lyric essays for the author. He keeps writing in later life. There are three his thinking that life is precious, mother language is most beautiful, so it can't be given up; undeserved favor of enthusiastic critics and readers; and believing the incantation that constant writing can exhaust the imaginative power in writing. The essay of Sun Will Never Set is named from the collection. It responds as echo to My Four Imaginary Enemies, and is the companion essay for describing the growth of four daughters. The essay is not humorous, self-mockery or bantering like the previous one but has deeper feeling and more vicissitudes. He shows deeper love for four daughters and highly praises his wife for acting as a kindly mother, so it is more magnificent in terms of pattern of human relations.