The numerous notes that he made during these years, amongst others on aging, were published posthumously under the title Senilia. In the spring of 1860 his health began to decline, and he experienced shortness of breath and heart palpitations; in September he suffered inflammation of the lungs and, although he was starting to recover, he remained very weak. The last friend to visit him was Wilhelm Gwinner;  according to him, Schopenhauer was concerned that he would not be able to finish his planned additions to Parerga and Paralipomena but was at peace with dying.
The extensive notes he compiled during these years, including those on aging, were published posthumously under the title Senilia. In the spring of 1860 his health began to deteriorate, and he experienced shortness of breath and heart irregularities; in September he suffered pneumonia and, although he was starting to recover, he remained very frail. The last friend to visit him was Wilhelm Gwinner;  according to him, Schopenhauer was concerned that he would not be able to complete his planned additions to Parerga and Paralipomena but was at peace with his impending death.