This aspect of Meursualt's personality is one of the main themes in the story. The absurdity of his emotional indifference to serious events cause Meursault to reflect on the meaninglessness of a person's life in society. Meursault refuses to consider anything such as fate or God as a reason for man's actions and existence. He can only use logic. Whether it is his mother's death, Marie's need to prove his love for her, or even his killing a man, nothing actually penetrates his emotional core. Yet, he pays attention to details, such as the scabs on the dog, because they are no threat to his emotional isolation.