The Story of My Boyhood and Youth reveals the beginnings of the forming of Muir's special relation towards nature. He considered the encounters with nature as quite an adventure and at first, paid special attention to bird life. John Muir understood that to discover truth, he must turn to what he believed were the most accurate sources. In his autobiographical account, The Story of My Boyhood and Youth, he writes that during his childhood, his father made him read the Bible every day. Muir eventually memorized three-quarters of the Old Testament and all of the New Testament. In his autobiography, written near the end of his life, he described his life from childhood years in Scotland and moving to America to student years in Wisconsin. When he was a student in the University of Wisconsin, he was a frequent caller at the house of Dr. Ezra S. Carr. The kindness shown him there, and especially the sympathy which Mrs. Carr, as a botanist and a lover of nature, felt in the young manes interests and aims, led to the formation of a lasting friendship. He regarded Mrs. Carr, indeed, as his "spiritual mother," and his letters to her in later years are the outpourings of a sensitive spirit to one who he felt thoroughly understood and sympathized with him.