康德的伦理学理论揭示和评价作品在伦理道德方面的价值和意义。这种理论在多丽丝·莱辛的小说《天黑前的夏天》中的表征可以理解为莱辛对生命的热爱和对存在的肯定。女主人公凯特开启了精神找寻之旅,从而实现自我救赎,是对自己的重新认识,同时也肯定了自我存在的真正价值。 Kant’s theory of ethics reveals and evaluates the value and significance of his work in ethics. The characterization of this theory in Doris Lessing’s novel The Summer Before Darkness can be interpreted as Lessing’s love of life and its affirmation of existence. The heroine Kate opened the journey of spiritual search in order to achieve self-salvation, it is to re-understand myself, but also affirmed the true value of self-existence.