What is a common theme in Cicero's philosophy regarding human behavior?

Cicero's philosophy places a strong emphasis on rationality as a defining characteristic of human behavior. He believed that humans possess the unique ability to reason, which distinguishes them from other animals. This rationality is central to his ideas about ethics, governance, and the formation of society. Cicero argued that by using reason, individuals can make moral choices that contribute to the common good. He viewed reason as a guiding force that should inform decision-making and lead to virtuous behavior. This theme underscores the importance of logical thinking and moral responsibility in human conduct, reflecting Cicero's belief in the potential for human beings to achieve a higher moral standard through their rational capabilities.