Philosophical Investigations was published in 1953, two years after the death of its author. In the preface written in Cambridge in 1945 where he was professor of philosophy he states: ‘Four years ago I had occasion to re-read my first book (the Tractatus Logico-Philosophicus) and to explain its ideas to someone. It suddenly seemed to me that I should publish those old thoughts and the new ones together: that the latter could be seen in the right light only by contrast with and against the background of my old way of thinking.’

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. 

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. 

Martin Heidegger, considered by some to be the greatest charlatan ever to claim the title of "philosopher", by some as an apologist for Nazism, and by others as an acknowledged leader in continental philosophy, is probably the most divisive thinker of the 20th century. In the second edition of this Very Short Introduction audiobook, Michael Inwood focuses on Heidegger's most important work, Being and Time, to explore its major themes of existence in the world, inauthenticity, guilt, destiny, truth, and the nature of time.

The story of philosophy is an epic tale, spanning civilizations and continents. It explores some of the most creative minds in history. But not since the long-popular classic by Bertrand Russell, A History of Western Philosophy, published in 1945, has there been a comprehensive and entertaining single-volume history of this great, intellectual, world-shaping journey.

 The year is 1919. The horror of the First World War is fresh for the protagonists of Time of the Magicians, each of whom finds himself at a crucial juncture. Benjamin is trying to flee his overbearing father and floundering in his academic career, living hand to mouth as a critic. Wittgenstein, by contrast, has dramatically decided to divest himself of the monumental fortune he stands to inherit, in search of spiritual clarity.

Born in Vienna into an extremely wealthy and highly cultured family, Ludwig Wittgenstein (1889-1951) grew up surrounded by art, music, and a disturbing amount of dysfunctional behavior. After studying mechanical engineering and developing an interest in aeronautics, he became obsessed with mathematics and logic, which led to his life's work exploring the relationship between language, philosophy, and reality.

In a career spanning 60 years, Sir Karl Popper has made some of the most important contributions to the 20th century discussion of science and rationality. The Myth of the Framework is a collection of some of Popper's most important material on this subject.  

Postmodernism has become the buzzword of contemporary society over the last decade. But how can it be defined? In this highly engaging introduction, the mysteries of this most elusive of concepts are unraveled, casting a critical light upon the way we live now, from the politicizing of museum culture to the cult of the politically correct. The key postmodernist ideas are explored and challenged, as they figure in the theory, philosophy, politics, ethics, and artwork of the period, and it is shown how they have interacted within a postmodernist culture. 

Anthony Stevens argues that Jung's visionary powers and profound spirituality have helped many to find an alternative set of values to the arid materialism prevailing Western society.

Nearly a hundred years after its publication, Kurt Gödel's famous proof that every mathematical system must contain propositions that are true - yet never provable - continues to unsettle mathematics, philosophy, and computer science. Yet unlike Einstein, with whom he formed a warm and abiding friendship, Gödel has long escaped all but the most casual scrutiny of his life. 

In 1913, the Viennese aristocracy is gathering to celebrate the 17th jubilee of the accession of Emperor Franz Josef, even as the Austro-Hungarian Empire is collapsing and the rest of Vienna is showing signs of rebellion. At the centre of this social labyrinth is Ulrich: a veteran, a seducer and a scientist, yet also a man 'without qualities' and therefore a brilliant and detached observer of his changing world.

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.

With his well known idiosyncrasies and aphoristic style, Friedrich Nietzsche is always bracing and provocative, and temptingly easy to dip into. Michael Tanner's introduction to the philosopher's life and work examines the numerous ambiguities inherent in his writings and explodes many of the misconceptions that have grown in the hundred years since Nietzsche wrote "do not, above all, confound me with what I am not!" 

A good book may have the power to change the way we see the world, but a great book actually becomes part of our daily consciousness, pervading our thinking to the point that we take it for granted, and we forget how provocative and challenging its ideas once were - and still are. The Structure of Scientific Revolutions is that kind of book.