The people's good is the highest law.

Marcus Tullius Cicero (106BC - 43BC)

According to Internet Encyclopedia of Philosophy

Marcus Tullius Cicero was born on January 3, 106 BC and was murdered on December 7, 43 BC. His life coincided with the decline and fall of the Roman Republic, and he was an important actor in many of the significant political events of his time (and his writings are now a valuable source of information to us about those events). He was, among other things, an orator, lawyer, politician, and philosopher. Making sense of his writings and understanding his philosophy requires us to keep that in mind. He placed politics above philosophical study; the latter was valuable in its own right but was even more valuable as the means to more effective political action. The only periods of his life in which he wrote philosophical works were the times he was forcibly prevented from taking part in politics