This was followed by Conversations at Tusculum, also in five volumes, which expound the key issues we should bear in mind in our pursuit of happiness. The first volume deals with indifference to death, the second with how to endure pain, the third with the alleviation of distress in times of trouble and the fourth with other distractions which affect our peace of mind. Finally, the fifth book addresses the topic that is best calculated to clarify the nature of philosophy—that is, it demonstrates that moral worth alone is adequate to ensure a happy life.