David Hume, philosopher, historian, economist, librarian, and essayist, was one of the great figures of the European Enlightenment. Unlike some of his famous contemporaries, however, he was not dogmatically committed to idealized conceptions of reason, liberty, and progress.  

Number theory is the branch of mathematics that is primarily concerned with the counting numbers. Of particular importance are the prime numbers, the "building blocks" of our number system. The subject is an old one, dating back over two millennia to the ancient Greeks, and for many years has been studied for its intrinsic beauty and elegance, not least because several of its challenges are so easy to state that everyone can understand them, and yet no one has ever been able to resolve them. But number theory has also recently become of great practical importance.

How does the physics we know today - a highly professionalized enterprise, inextricably linked to government and industry - link back to its origins as a liberal art in Ancient Greece? What is the path that leads from the old philosophy of nature and its concern with humankind's place in the universe to modern massive international projects that hunt down fundamental particles and industrial laboratories that manufacture marvels? This audiobook introduces us to Islamic astronomers and mathematicians calculating the size of the Earth while their caliphs conquered much of it and more.

The laws of thermodynamics drive everything that happens in the universe. From the sudden expansion of a cloud of gas to the cooling of hot metal - everything is moved or restrained by four simple laws. This powerful and compact introduction explains what these four laws are and how they work, using accessible language and virtually no mathematics.

Quantum theory is the most revolutionary discovery in physics since Newton. This book gives a lucid, exciting, and accessible account of the surprising and counterintuitive ideas that shape our understanding of the sub-atomic world. It does not disguise the problems of interpretation that still remain unsettled 75 years after the initial discoveries. Uncertainty, probabilistic physics, complementarity, the problematic character of measurement, and decoherence are among the many topics discussed.

Black holes are a constant source of fascination to many due to their mysterious nature. This Very Short Introduction audiobook addresses a variety of questions, including what a black hole actually is, how they are characterized and discovered, and what would happen if you came too close to one. 

To many in the West, Orthodoxy remains shrouded in mystery, an exotic and foreign religion that survived in the East following the Great Schism of 1054 that split the Christian world into two camps - Catholic and Orthodox. However, as the second largest Christian denomination, Orthodox Christianity is anything but foreign to the nearly 300 million worshipers who practice it. For them, Orthodoxy is a living, breathing reality; a way of being Christian ultimately rooted in the person of Jesus and the experience of the early church.  

This short, smart book tells you everything you need to know about "nothing". What remains when you take all the matter away? Can empty space - "nothing" - exist? To answer these questions, eminent scientist Frank Close takes us on a lively and accessible journey that ranges from ancient ideas and cultural superstitions to the frontiers of current research, illuminating the story of how scientists have explored the void and the rich discoveries they have made there. 

The ancient Near East is known as the "cradle of civilization" - and for good reason. Mesopotamia, Syria, and Anatolia were home to an extraordinarily rich and successful culture. Indeed, it was a time and place of earth-shaking changes for humankind: the beginnings of writing and law, kingship and bureaucracy, diplomacy and state-sponsored warfare, mathematics and literature. This Very Short Introduction audiobook offers a fascinating account of this momentous time in human history. 

 John Stuart Mill (1806-73) is widely regarded as the leading liberal philosopher, economist, and political theorist of nineteenth century Britain. In his lifetime, he was best known for his System of Logic (1843) and the Principles of Political Economy (1848). Today Mill is chiefly identified with On Liberty (1859), perhaps the definitive text of modern liberal statement of its subject, and probably the single most important work of modern political thought. 

Logic is often perceived as having little to do with the rest of philosophy, and even less to do with real life. In this lively and accessible introduction, Graham Priest shows how wrong this conception is. He explores the philosophical roots of the subject, explaining how modern formal logic deals with issues ranging from the existence of God and the reality of time to paradoxes of probability and decision theory. Along the way, the basics of formal logic are explained in simple, non-technical terms, showing that logic is a powerful and exciting part of modern philosophy.

T. W. Adorno (1903-1969) was a German philosopher and social and cultural theorist. His work has come to be seen as increasingly relevant to understanding the pathologies of contemporary society evident in today's climate emergency, the financial crash, the reappearance of fascism in many countries, and the growing instability of the world order. This Very Short Introduction covers Adorno's work and life, explaining his key philosophical concepts and the philosophical background and historical context of Adorno's thinking.

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. 

Stoicism is two things: a long past philosophical school of ancient Greece and Rome, and an enduring philosophical movement that still inspires people in the twenty-first century to rethink and reorganize their lives in order to achieve personal satisfaction. What is the connection between them? This Very Short Introduction provides an introductory account of Stoic philosophy, and tells the story of how ancient Stoicism survived and evolved into the movement we see today.

What is socialism? Does it have a future, or has it become an outdated ideology in the 21st century? This audiobook considers the major theories in socialism and explores its historical evolution from the French Revolution to the present day. Michael Newman argues that socialism has always been a diverse doctrine, while nevertheless containing a central core of interconnected values and goals: a critique of capitalism; an optimistic view of human beings; and the belief that it is possible to establish societies based on egalitarianism, social solidarity, and cooperation.