Roman statesman and philosopher Marcus Tullius Cicero wrote on a wide range of subjects, from Greek philosophy to moral duty to friendship. Though he considered philosophy secondary to politics and often used his writings for explicit political ends, his work has nevertheless been widely read for over two thousand years and has influenced everything from the culture of the Renaissance to the ideals of the founding fathers of the United States.

Cato the Younger was one of the many biographies documented by Plutarch in his series called Parallel Lives. Related to Cato the Elder, Cato the Younger was also a student of philosophy as well as a Roman Statesman. After his father died and he gained his inheritance, Cato the Younger began his life as philosopher, warrior, and political leader. His life ended, as so many Roman lives did back then, in tragedy.

Socrates is in prison, sentenced to die when the sun sets. In this final conversation, he asks what will become of him once he drinks the poison prescribed for his execution. Socrates and his friends examine several arguments designed to prove that the soul is immortal. This quest leads him to the broader topic of the nature of mind and its connection not only to human existence but also to the cosmos itself. What could be a better way to pass the time between now and the sunset?

The Republic poses questions that endure: What is justice? What form of community fosters the best possible life for human beings? What is the nature and destiny of the soul? What form of education provides the best leaders for a good republic? What are the various forms of poetry and the other arts, and which ones should be fostered and which ones should be discouraged? How does knowing differ from believing?

Laches, a general in the Athenian army, saw Socrates fight bravely in the battle of Delium. When he and Nicias, another general, are asked to explain the idea of courage, they are at a loss, and words fail them. How does courage differ from thoughtless and reckless audacity? Can a lion be said to be courageous? What about small children who have little idea of the dangers they face? Should we call people courageous who do not know whether their bravery will produce good or bad consequences?

Phaedrus lures Socrates outside the walls of Athens, where he seldom goes, by promising to share a new work by his friend and mentor, Lysias, a famous writer of speeches. This dialogue provides a powerful example of the dialectical writing that Plato uses to manifest ideas that are essential to human existence and to living a good life. Phaedrus shows how oral and written forms of language relate to each other and to philosophy.

Hippias of Elis travels throughout the Greek world practicing and teaching the art of making beautiful speeches. On a rare visit to Athens, he meets Socrates, who questions him about the nature of his art. Socrates is especially curious about how Hippias would define beauty. They agree that beauty makes all beautiful things beautiful, but when Socrates presses him to say precisely what he means, Hippias is unable to deliver such a definition.

Socrates questions Ion, an actor who just won a major prize, about his ability to interpret the epic poetry of Homer. How does an actor, a poet, or any other artist create? Is it by knowing? Is it by inspiration? As the dialogue proceeds, the nature of human creativity emerges as a mysterious process and an unsolved puzzle.

Socrates is on trial for his life. He is charged with impiety and corrupting young people. He presents his own defense, explaining why he has devoted his life to challenging the most powerful and important people in the Greek world. The reason is that rich and famous politicians, priests, poets, and a host of others pretend to know what is good, true, holy, and beautiful, but when Socrates questions them, they are shown to be foolish rather than wise.

The Athenian court has found Socrates guilty and sentenced him to death. While he is waiting to be executed, his friend, Crito, comes to the prison to persuade him to escape and go into exile. Socrates responds by examining the essence of law and community, probing the various kinds of law and making distinctions that go far beyond the particular issue of whether or not Socrates should escape.

A dialogue between Socrates and Meno probes the subject of ethics. Can goodness be taught? If it can, then we should be able to find teachers capable of instructing others about what is good and bad, right and wrong, or just and unjust.

In his dialogues, the Stoic philosopher Seneca outlines his thoughts on how to live in a troubled world. Tutor to the young emperor Nero, Seneca wrote practical philosophical exercises that draw upon contemporary Roman life and illuminate the intellectual concerns of the day. The dialogues also have much to say to the modern listener, as they range widely across subjects such as the shortness of life, tranquility of mind, anger, mercy, happiness, and grief at the loss of a loved one.

The masterpiece of Rome's greatest poet, Virgil's Aeneid has inspired generations of readers and holds a central place in Western literature. The epic tells the story of a group of refugees from the ruined city of Troy, whose attempts to reach a promised land in the West are continually frustrated by the hostile goddess Juno. Finally reaching Italy, their leader, Aeneas, is forced to fight a bitter war against the natives to establish the foundations from which Rome is destined to rise.

Charged with treason under Theodoric the Great in sixth-century Rome, Boethius served one year's imprisonment, awaiting trial and eventual execution. During this time, he wrote The Consolation of Philosophy, which would go on to be one of the most popular philosophical works of all time, contributing much to medieval thought and influencing the likes of Dante and Chaucer, as well as Renaissance writers, such as Milton and Shakespeare.

Aristotle's Nicomachean Ethics, said to be dedicated to Aristotle's son, Nicomachus, is widely regarded as one of the most important works in the history of Western philosophy. Addressing the question of how men should best live, Aristotle's treatise is not a mere philosophical meditation on the subject, but a practical examination that aims to provide a guide for living out its recommendations.