Idries Shah's definitive work, The Sufis, completely overturned Western misconceptions of Sufism, revealing a great spiritual and psychological tradition encompassing many of the world's greatest thinkers: Rumi, Omar Khayyam, Ibn El-Arabi, Al-Ghazzali, Saadi, Attar, Francis of Assisi, and many others.

The astonishing impact of Sufism on the development of Western civilization from the seventh century is traced through the work of Roger Bacon, John of the Cross, Raymond Lully, Chaucer, and others. Many of the greatest traditions, ideas, and discoveries of the West are traced to the teachings and writings of Sufi masters working centuries ago.

But The Sufis is far more than a historical account. In the tradition of the great Sufi classics, the deeper appeal of this remarkable book is in its ability to function as an active instrument of instruction, in a way that is so clearly relevant to our time and culture.

Perhaps one of the most revolutionary works of philosophy ever presented, The Phenomenology of Spirit is Hegel's 1807 work that is in numerous ways extraordinary.

It begins with a Preface, created after the rest of the manuscript was completed, that explains the core of his method and what sets it apart from any preceding philosophy. The Introduction, written before the rest of the work, summarizes and completes Kant's ideas on skepticism by rendering it moot and encouraging idealism and self-realization.

The body of the work is divided into six sections of varying length, entitled "Consciousness," "Self-Consciousness," "Reason," "Spirit," "Religion," and "Absolute Knowledge." A myriad of topics are discussed, and explained in such a harmoniously complex way that the method has been termed Hegelian dialectic.

Ultimately, the work as a whole is a remarkable study of the mind's growth from its direct awareness to scientific philosophy, proving to be a difficult yet highly influential and enduring work.

The Road to Serfdom is a classic work in political philosophy, intellectual and cultural history, and economics. This influential book has both inspired and infuriated politicians, scholars, and general readers for decades. Originally published in England in 1944, The Road to Serfdom offers a passionate warning against the dangers of state control over the means of production.

Friedrich A. Hayek argues that the collectivist idea of empowering government with increasing economic control would inevitably lead not to a utopia, but to the horrors experienced in Nazi Germany and Fascist Italy. First published by the University of Chicago Press on September 18, 1944, the book garnered immediate attention and popularity. The first printing of 2,000 copies sold out instantly, and within six months, more than 30,000 copies were sold.

A perennial best-seller, The Road to Serfdom has sold over a quarter of a million copies in the United States alone, not including its British edition or the many translations into languages such as German, French, Dutch, Swedish, and Japanese. It stands alongside works by Alexis de Tocqueville, John Stuart Mill, and George Orwell for its timeless meditation on the relationship between individual liberty and government authority.

This influential book continues to impact political and social climates, from the rise of socialism after World War II to the Reagan and Thatcher revolutions in the 1980s, and the transitions in Eastern Europe from communism to capitalism in the 1990s.