text: One of this author's title characters is a doctor who writes a manuscript entitled All or Nothing after being confined to an insane asylum.
full_question: One of this author's title characters is a doctor who writes a manuscript entitled All or Nothing after being confined to an insane asylum. This author wrote a conversation between himself and his character Augusto in a novel which ends with an epilogue spoken by Augusto's dog. A novel by this author is set in a lakeside mountain village and follows a priest who continues preaching to the villagers despite having lost his faith. This author claimed "homo sum, ergo cogito" in an essay which examines the human fear of death, The (*) Tragic Sense of Life. This author's anti-realist "nivolas" include one in which Joaquin gives a speech eulogizing his hated brother, the title painter of a depiction of the Cain story. For 10 points, name this associate of the Generation of '98, the Spanish author of Niebla and Abel Sanchez.
first_sentence: One of this author's title characters is a doctor who writes a manuscript entitled All or Nothing after being confined to an insane asylum.
raw_answer: Miguel de Unamuno y Jugo