Though David Hume (1711-1776) is now best known for his role as a prominent philosopher of the Enlightenment rather than an historian, it was his momentous six-volume The History of England that really brought him national attention during his lifetime. Not surprisingly, this volume covers the greatest number of years; the increasing availability of historical record allows for far greater detail. But Hume is still fascinating as he discusses the passage of time from Julius Caesar, through the advent of William the Conqueror and the Normans, to the death of King John in 1216.

In his autobiography, David Hume declared unequivocally that this work, An Enquiry Concerning the Principles of Morals (1751) is "of all my writings, historical, philosophical, or literary, incomparably the best." In it, Hume takes the discussion away from traditional attitudes where either rational or metaphysical issues govern moral principles. Instead, he introduces the human factor, introducing the sentiments and passions inherent in human psychology.

Though published in 1867 when the British Empire was approaching its height, Walter Bagehot’s essay "The English Constitution" is not only one of the great political classics but is also an unquestionably relevant document for our times. Despite the passing of more than 150 years, despite huge changes in enfranchisement, in attitudes and in world order, this fascinating document prompts us to re-evaluate the process of government - wherever we live. And what is more, it is written with grace, elegance - and wit!

Eminent Victorians, Lytton Strachey's wonderfully witty and Wildean quartet of biographies, stands out as one of the most radical and groundbreaking works of its genre. With relentless precision, Strachey explores the lives of four exemplars of the Victorian age: Cardinal Manning, Florence Nightingale, Thomas Arnold and General Gordon, irreverently bringing to light the flaws, strengths, ambitions and hypocrisies of these treasured legends.

William James was one of the most influential figures in 19th-century American philosophy and psychology. His Pragmatism is a set of lectures that he gave in 1906-07 in answer to the enduring debate between empiricism and rationalism. Shifting between them, he proposed pragmatism as a method, the idea being that the value of any truth is dependent upon its utility–upon its practical and experiential consequences.

The remarkable range of Plato's Dialogues is vividly demonstrated by these three works. It opens with Phaedrus, a highly personal discussion between Socrates (David Rintoul) and the young, love-struck Phaedrus (Gunnar Cauthery). They go for a walk outside the walls of Athens and, under a plane tree by the banks of the Ilissus, talk about love - erotic and 'Platonic' love. Socrates endeavours to steer Phaedrus away from infatuation and show him that real love is based on concern for the beloved.

Underlain by an acute sense of ethics, this provided the basis for his strongly declared, wide-ranging views on many subjects: prohibition of cock-fighting, liberty of the press, universal suffrage, the removal of religious tests for office and even hunting. All were radical ideas for his time. He also proposed the decriminalisation of homosexuality, though even he did not dare to publish his essay on this subject during his lifetime. But An Introduction to the Principles of Morals and Legislation was his major work.

The first volume of Will Durant's Pulitzer Prize-winning series, Our Oriental Heritage: The Story of Civilization, Volume I chronicles the early history of Egypt, the Middle East, and Asia.

Critique of Judgement was published in 1790 and is divided into two parts, the Critique of Aesthetic Judgement and the Critique of Teleological Judgement. Our ‘judgements of taste’, as Kant describes our aesthetic judgements, have both a personal and a universal function: personal, because we have a subjective aesthetic response to the ‘agreeable’, the ‘beautiful’, the ‘sublime’ and the ‘good’; but also there is a ‘universal’ aspect because our aesthetic response has a ’disinterested’ element. This brings under Kant’s spotlight, for example, the concept of beauty and the perception of beauty.

John Locke (1632-1704) was a product of his troubled times: he lived through the English Civil War, the Interregnum, the Restoration, Monmouth’s Rebellion, the Bloody Assizes and the Glorious Revolution. His empirical thinking was very much directed at finding rational solutions to the root causes of those troubles.

The influence of Plato, his Dialogues and his ‘Academy', cast a long shadow. Around 35 Dialogues, almost all featuring Socrates as the principal figure, are generally ascribed to Plato and form one of the most important threads in Western philosophy. These four Dialogues may fall into the ‘Attributed Texts' category, but they are of sufficient interest to warrant study in our time and when set against the principal canon.

From the perspective of an unbeliever, Fear and Trembling explores the paradox of faith, the nature of Christianity, and the complexity of human emotion. Kierkegaard examines the biblical story of Abraham, who was instructed to sacrifice his son Isaac, and forces us to consider Abraham's state of mind. What drove Abraham, and what made him carry out such an absurd and extreme request from God? Kierkegaard argues that Abraham's agreement to sacrifice Isaac, and his suspension of reason, elevated him to the highest level of faith.

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.

The Decline of the West - Volume 1 published in 1917, Volume 2 in 1922 - has exercised and challenged opinion ever since. It was a huge undertaking by Oswald Spengler (1880-1936), formerly an unpublished historian and philosopher who set out to radically reconsider history - the rise and fall of world civilisations and their cultures. His primary view was to reject the established Eurocentric paradigm (ancient/classical, Medieval - and, following the Renaissance - modern) and to take a totally new perspective.

John Locke and his works - particularly An Essay Concerning Human Understanding - are regularly and rightly presented as foundations for the Age of Enlightenment. His primary epistemological message - that the mind at birth is a blank sheet waiting to be filled by the experiences of the senses - complemented his primary political message: that human beings are free and equal and have the right to envision, create and direct the governments that rule them and the societies within which they live.