Seeing self-possession as the key to an existence lived 'in accordance with nature', the Stoic philosophy called for the restraint of animal instincts and the importance of upright ethical ideals and virtuous living. Seneca's writings are a profound, powerfully moving and inspiring declaration of the dignity of the individual mind. 

In the first century BC, Marcus Tullius Cicero, orator, statesman and defender of republican values, created these philosophical treatises on such diverse topics as friendship, religion, death, fate and scientific inquiry. A pragmatist at heart, Cicero's philosophies were frequently personal and ethical, drawn not from abstract reasoning but through careful observation of the world. The resulting works remind us of the importance of social ties, the questions of free will and the justification of any creative endeavour.   

In these four dialogues, Plato develops the Socratic belief in responsibility for one's self and shows Socrates living and dying under his philosophy. In Euthyphro, Socrates debates goodness outside the courthouse, Apology sees him in court, rebutting all charges of impiety, in Crito, he refuses an entreaty to escape from prison, and in Phaedo, Socrates faces his impending death with calmness and skillful discussion of immortality.

Written in Greek by an intellectual Roman emperor without any intention of publication, the Meditations of Marcus Aurelius offer a wide range of fascinating spiritual reflections and exercises developed as the leader struggled to understand himself and make sense of the universe. Spanning from doubt and despair to conviction and exaltation, they cover such diverse topics as the question of virtue, human rationality, the nature of the gods and Aurelius's own emotions. 

To overcome a crisis of melancholy after the death of his father, Montaigne withdrew to his country estates and began to write, and in the highly original essays that resulted he discussed themes such as fathers and children, conscience and cowardice, coaches and cannibals, and, above all, himself.

In his near-contemporary account of classical Greek tragedy, Aristotle examines the dramatic elements of plot, character, language and spectacle that combine to produce pity and fear in the audience, and asks why we derive pleasure from this apparently painful process. Taking examples from the plays of Aeschylus, Sophocles and Euripides, the Poetics introduced into literary criticism such central concepts as mimesis ('imitation'), hamartia ('error') and katharsis ('purification'). 

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. 

Distilled to its essence, the ancient Greco-Roman philosophy known as Stoicism is a philosophy of personal betterment. Professor Pigliucci, who knows firsthand just how transformative a Stoic approach to life can be, has designed these 25 lessons as an enlightening introduction to the basics of Stoic philosophy and ways to incorporate its lessons into your own life. 

The Republic, Plato's masterwork, was first enjoyed 2,400 years ago and remains one of the most widely read books in the world. Presented as a dialogue between Plato's teacher Socrates and various interlocutors, it is an exhortation to philosophy, inviting its listeners to reflect on the choices to be made if we are to live the best life available to us. This complex, dynamic work creates a picture of an ideal society governed not by the desire for money, power or fame, but by philosophy, wisdom and justice.

'The two foes of human happiness are pain and boredom.' Arthur Schopenhauer (1788-1860) was one of the most influential philosophers of the 19th century because his humanistic, atheistic, if pessimistic views chimed with a new secularism that was emerging from a Western society dominated by religion. Despite his rather forbidding image (and a few outdated views), he is one of the most approachable German philosophers, and this is certainly evident in these two key works, The Wisdom of Life and Counsels and Maxims.

'On Anger' is one of Seneca's most important essays. At some length he investigates the nature of anger: how and why it emerges, the effect it has on the individual and those to whom it is directed, and how to manage it and prevent it even from arising. For, Seneca considers, anger simply serves no purpose - it does not bring courage in war, prevent others misbehaving or punish miscreants. In short it has a negative effect on all. In 'On Leisure' he takes a short look at what is really meant by the term.

Written after the capture of Rome in 410 by Alaric, King of the Visigoths, St Augustine's City of God was intended as a response to pagan critics who blamed Christianity for this brutal defeat. Augustine attacks ancient pagan beliefs and relates the corruption and immorality that led to Rome's downfall, which began before Christ, before reaching his main argument: that the City of Man is perishing and only the Heavenly City of God will endure.

Stoicism teaches us to acknowledge our emotions, reflect on what causes them and redirect them for our own good. Whenever we worry about how to be happy, we are worrying about how to lead a good life. No goal seems more elusive. Massimo Pigliucci explores this remarkable philosophy and how its wisdom can be applied to our everyday lives in the quest for meaning. He shows how Stoicism teaches us the importance of a person's character, integrity and compassion.

Epicurus of Samos (341-270 BCE) was the founder of the philosophical system to which he gave his name: Epicureanism. It is a label that is often misused and misunderstood today, with ‘a life of pleasure’ as the key aim misinterpreted as a life of indulgence. In fact, the philosophy of Epicurus demonstrated also by his life, was anything but! He established a school in Athens called The Garden, underpinned by his system of ethics. 

Beyond Good and Evil confirmed Nietzsche's position as the towering European philosopher of his age. The work dramatically rejects traditional Western thought with its notions of truth and God, good and evil. Nietzsche seeks to demonstrate that the Christian world is steeped in a false piety and infected with a 'slave morality'. With wit and energy, he turns from this critique to a philosophy that celebrates the present and demands that the individual impose their own 'will to power' upon the world.