This lively and accessible introduction to Plato focuses on the philosophy and argument of his writings, drawing the listener into Plato's way of doing philosophy, and the general themes of his thinking. It looks at Plato as a thinker grappling with philosophical problems in a variety of ways, rather than a philosopher with a fully worked-out system. It includes a brief account of Plato's life and the various interpretations that have been drawn from the sparse remains of information.

Kant is arguably the most influential modern philosopher, but also one of the most difficult. Roger Scruton tackles his exceptionally complex subject with a strong hand, exploring the background to Kant's work and showing why the Critique of Pure Reason has proved so enduring. 

The influence of Aristotle, the prince of philosophers, on the intellectual history of the West is second to none. In this book, Jonathan Barnes examines Aristotle's scientific researches, his discoveries in logic and his metaphysical theories, his work in psychology and in ethics and politics, and his ideas about art and poetry, placing his teachings in their historical context. 

One of the leading philosophical movements of the 20th century, existentialism has had more impact on literature and the arts than any other school of thought. Focusing on the leading figures of existentialism, including Sartre, Nietzsche, Heidegger, Kierkegaard, de Beauvoir, Merleau-Ponty, and Camus, Thomas Flynn offers a concise account of existentialism, explaining the key themes of individuality, free will, and personal responsibility, which marked the movement as a way of life, not just a way of thinking.

Schopenhauer is considered to be the most accessible of German philosophers. This book gives a succinct explanation of his metaphysical system, concentrating on the original aspects of his thought, which inspired many artists and thinkers including Nietzsche, Wagner, Freud, and Wittgenstein. Schopenhauer's central notion is that of the will-a blind, irrational force that he uses to interpret both the human mind and the whole of nature.

Hegel is regarded as one of the most influential figures on modern political and intellectual development. After painting Hegel's life and times in broad strokes, Peter Singer goes on to tackle some of the more challenging aspects of Hegel's philosophy. Offering a broad discussion of Hegel's ideas and an account of his major works, Singer explains what have often been considered abstruse and obscure ideas in a clear and inviting manner. 

In the second edition of his Very Short Introduction, Skinner includes new material on The Prince, showing how Machiavelli developed his neo-classical political theory, through engaging in continual dialogue with the ancient Roman moralists and historians, especially Cicero and Livy. The aim of political leaders, Machiavelli argues, should be to act virtuously so far as possible, but to stand ready "to be not good" when this course of action is dictated by necessity. 

From the philosophy of Aristotle and Confucius, to Thomas Aquinas' Summa Theologiae, to the paintings of Raphael, Botticelli, and many more, fascination with the virtues has endured and evolved to fit a wide range of cultural, religious, and philosophical contexts through the centuries. This Very Short Introduction audiobook introduces listeners to the various virtues: the moral virtues, the intellectual virtues, and the theological virtues, as well as the capital vices. 

Ludwig Wittgenstein (1889-1951) was an extraordinarily original thinker, whose influence on 20th-century thinking far outside the bounds of philosophy alone. In this engaging Introduction, A. C. Grayling makes Wittgenstein's thought accessible to the general listener by explaining the nature and impact of Wittgenstein's views. He describes both his early and later philosophy, the differences and connections between them, and gives a fresh assessment of Wittgenstein's continuing influence on contemporary thought. 

If you move at high speed, time slows down, space squashes up, and you get heavier. Travel fast enough and you could weigh as much as a jumbo jet, be flattened thinner than a CD without feeling a thing - and live forever! As for the angles of a triangle, they do not always have to add up to 180 degrees. And then, of course, there are black holes. These are but a few of the extraordinary consequences of Einstein's theory of relativity.