Cicero’s formulation of ethics was a major influence on minds as diverse as St. Augustine, St. Thomas Aquinas, Martin Luther, John Locke, Voltaire, and Thomas Jefferson. Perhaps we would do wisely to return to a fountain that has watered so many so well.
During quarantine, ideas like eternity and time dilation can go from “abstract speculation” to “oh, I could have told you that.” Eternity can therefore be a very useful point of entry into the great conversation, in which it has (appropriately) been a perennial topic.
Although his philosophy was never held by more than a small fraction of the Roman people, his work had a major impact on the poets that succeeded him and remained popular for centuries, and went on to influence many eminent scholars.
The paradoxes in how gravity, light, and atomic nuclear forces operate have prompted subtle theories about not only nature, but reality as such—bending science back towards its parent discipline of philosophy.