Philosophy has always been dangerous for philosophers; Friedrich Nietzsche made it dangerous for everyone. His ideas presaged a collective madness which was to ravage Europe throughout the first half of the 20th century, drawing a chilling parallel with the insanity that gripped Nietzsche towards the end of his life. His philosophy is one of aphorisms and penetrating psychological insights, his major concept being the Will to Power - a notion that he saw as the basic impulse for all our acts. Viewing Christianity as a subtle perversion of this concept Nietzsche is famous for his pronouncement that ‘God is dead’.

Philosophy for busy people. Listen to a succinct account of the philosophy of Foucault in just one hour. The French philosopher Michel Foucault set about his task rather like a historian. After painstaking research, he concluded that knowledge and power were intimately related throughout history.

Philosophy for busy people. Listen to this succinct account of the philosophy of Kant in just one hour. Immanuel Kant taught and wrote prolifically about physical geography yet never travelled farther than forty miles from his home in Königsberg. Appropriately, his philosophy strenuously denies that all knowledge is derived from experience, insisting instead that all experience must conform to knowledge. Kant’s aim was to restore metaphysics.

Philosophy for busy people. Listen to a succinct account of the philosophy of Hegel in just one hour. With Hegel philosophy became very difficult indeed – even the great man himself conceded that ‘only one man understands me, and even he does not.’ His dialectical method produced the most grandiose metaphysical system known to humanity, and included absolutely everything, its most vital element being the dialectic of the thesis, antithesis and synthesis.

Philosophy for busy people. Listen to this succinct account of the philosophy of Socrates in just one hour. Socrates is widely renowned as one of the founders of Western philosophy, despite the fact that his ideas survive largely through the work of his pupil Plato. Socrates’ dialectic – a method of aggressive questioning – was the forerunner of logic; he used it to cut through the pretentions of his adversaries and arrive at the truth.

Philosophy for busy people. Listen to this succinct account of the philosophy of Aristotle in just one hour. The philosophy of Aristotle dominated Western thought for over a thousand years. He had a mind that mastered all disciplines from mathematics to politics and had a continuing impact on every sphere of knowledge he touched. Above all, Aristotle is credited with the founding of logic.

Philosophy for busy people. Listen to this succinct account of the philosophy of Plato in just one hour. Plato is still seen by many as the greatest of all philosophers, inspiring many of the finest thinkers through the ages. Indeed, many see all later philosophy as nothing but attempts to answer the questions he raised. He founded the Academy, the world’s first university, in 387 BC and taught that the physical world is not reality but rather a reproduction of the true source.

Philosophy for busy people. Listen to a succinct account of the philosophy of Russell in just one hour. Bertrand Russell claimed to be driven by three great passions that drove his personal as well as his intellectual life: a longing for love, a quest for knowledge and a heart-rending pity for human suffering. His philosophical outlook, which took deep account of the science of his time, was nonetheless rooted in logic and empiricism.

Philosophy for busy people. Read a succinct account of the philosophy of Leibniz in just one hour.Leibniz was the first great German philosopher to produce an all-embracing philosophical system. He came to the remarkable conclusion that space and time do not exist – they are mere superstitious assumptions. Only things exist and only God is able to see things as they truly are – from a perspectiveless viewpoint. Yet the infinite of ultimate objects that make up the world (‘monads’) are not material: they are metaphysical and thus not subject to the laws of cause and effect.

Philosophy for busy people. Listen to a succinct account of the philosophy of Kierkegaard in just one hour.Although Kierkegaard was not a philosopher in the academic sense, he produced what many people expect of philosophy. He didn’t write about the world, he wrote about life – how we live and how we choose to live, particularly focussing on the individual and the notion of his (or her) existence.

Philosophy for busy people. Listen to a succinct account of the philosophy of Hume in just one hour.Hume reduced philosophy to ruins, denying the existence of everything except our actual perceptions themselves. The world is nothing more than part of my consciousness. Yet we know the world remains, and we go on as before. What Hume expressed was the status of our knowledge about the world – a world in which neither religion nor science is certain.

One of the two major philosophical traditions of the 20th century was linguistic analysis, derived largely from Wittgenstein. The other, diametrically opposed, came from Heidegger, and its fundamental question was: ‘What is the meaning of existence?’ For Heidegger, this was not a query that could simply be ‘analysed away’ - it was beyond the reach of logic or reason. This was the primary ‘given’ of every individual life. To confront it, Heidegger needed to develop an entirely new form of philosophy. Here is a concise, expert account of Heidegger’s life and philosophical ideas that is entertainingly written and easy to understand.

Philosophy for busy people. Read a succinct account of the philosophy of Spinoza in just one hour.Spinoza’s brilliant metaphysical system was derived neither from reality nor experience. Starting from basic axioms (assumptions), by means of a series of geometric proofs he built a universe which was also God – one and the same thing, the classic example of pantheism.

Augustine’s Confessions details his personal struggles with morality, his spiritual crisis and the conversion to Christianity that ultimately led him to his major contribution to philosophy: the fusion of the doctrines of Christianity and Neoplatonism. This provided Christianity with a strong intellectual backing by tying it to the Greek tradition of philosophy. Augustine also produced important philosophic ideas of his own, including theories of time and subjective knowledge that anticipated by many centuries the work of Kant and Descartes.

John Stuart Mill is remembered today as the leading exponent of Utilitarianism, arguing that our aim in life must be the attainment of pleasure and the minimizing of pain for the majority of people. The principle that lies at the heart of Utilitarianism is "the greatest benefit of the greatest number" - an idea that perhaps seems self-evident today but one that was seen as radical within Mill’s own time. This central idea has become the unspoken founding principle of our modern way of life in the free Western democracies. This audiobook is an expert account of J.S. Mill’s life and philosophical ideas.