The first female Doctor of the Church, Teresa of Ávila, was a visionary who took matters of reform into her own hands. Even when the church authorities came against her, she stood her ground and held fast to her convictions. In so doing, she managed to persuade the Catholic powers to come around to her point of view. Teresa was not someone who took “no” for an answer; she charted her own course in life.

Although he was born in what was considered the backwaters of the Roman Empire, Saint Augustine of Hippo has long been renowned for his early religious and philosophical thought. He has been called a doctor of the Church for his unrivaled ability of patching up even the most complex of theological questions. He tackled such things as the condition of the soul and the omnipotence of God. During the course of his tenure as bishop of the North-African city of Hippo, Augustine often gained as many critics as he did followers.

Nikola Tesla was a major figure in the world in which he lived. As the 19th century gave way to the 20th, it was Tesla who would contribute to some of the world's most amazing inventions. It was Tesla's theories, patents, and experiments that would pave the way for the digital, wireless world we are so familiar with today. Tesla didn't enjoy the high honors bestowed on so many of his contemporaries, yet he enjoyed the power of knowing that it was his inventions that were powering the world, literally.

While names like Nero, Caligula, Hadrian, and Constantine grab all the attention with their exploits, Marcus Aurelius tends to sit more in the historical background of the Roman Empire. In many ways, he is a lesser known emperor even though his written works have stood the test of time. Marcus, a prolific writer and formidable scholar, was perhaps the first to fulfill Plato’s dream of the philosopher king.

Constantine the Great was one of the most pivotal figures in the history of the Roman Empire and the widespread expansion of the Christian religion. This is in no way an understatement; Constantine was not only one of the last truly powerful Roman emperors, but he also successfully reconstituted the whole empire according to his vision of Rome’s future. He played the most significant role in transforming the Empire from a Greco-Roman pagan dominion into a bulwark of the Christian faith, granting for the first time real temporal power for the early Christian church.

The Great Depression was one of the most trying eras in American history. All aspects of the US were affected. After the stock market crash of 1929, the nation was thrust into a decade of turmoil and change - in government, the economy, and culture. Many of the changes brought about by the Great Depression remain today.

In the midst of World War I, the Easter Rising took place in Dublin and throughout Ireland in April 1916. The revolutionary movement faced many problems from the beginning, including splintered leadership, disorganized support, opposition from moderate supporters of home rule, and prepared retaliation from the British.

Many ancient civilizations are described as mysterious, but none provide as many puzzles and unanswered questions as the Olmecs. These people arrived in lands near the Gulf of Mexico around 1500 BCE and brought with them entirely new concepts in terms of engineering, agriculture, and religion. The problem is we have no idea where they came from or how they developed these new ideas.

In the face of ruthless totalitarian rule, it is only the rare few who stand up at risk of their own life to do what is right. Dietrich Bonhoeffer was one of those exceptional individuals. Even on pain of death, he would not bend, he would not budge - this German pastor fought the Nazi regime with every fiber of his being.

Rosalind Franklin was what can only be called an overlooked genius. Although she was not fully credited for the feat at the time, her work led to major breakthroughs in our understanding of DNA. In fact, she took the first X-ray photo of DNA in all of its double helix glory. By the time her former colleagues were being showered with accolades for results they made at least partially based on her findings, Franklin would not be around to see it. Sadly, it’s believed that her use of X-ray equipment gave her terminal cancer, cutting her life short at age 37.

During the bitter winter of 1692/93, a group of young Puritan women in the colonial town of Salem, Massachusetts, accused more than 200 of their neighbors and fellow townspeople of using witchcraft to injure and torment them. This was an incredibly serious allegation that led to sensational court proceedings and ended with the execution of 19 people.

According to history books, the Roman Empire ended in 476 CE with the fall of Rome. But if you asked most people alive at that time, they would have pointed you to what they considered the continuation of the Roman Empire - the civilization we now call the Byzantine Empire. The Byzantines, however, were more than just a remnant of Roman glory. At its geographical peak, the Byzantine Empire stretched out across the Mediterranean world.

No historical figure’s life story offers a more intriguing and insightful look at a specific moment in French - and European - history than that of Joan of Arc. Over the course of a life that sadly lasted just 19 years, Joan of Arc completely altered the course of the Hundred Year’s War. Ultimately, Joan of Arc was burned at the stake for her insistence that she received counsel from God, but what she achieved as a result of this guidance is a truly incredible story.

What do you think of when you consider the Middle Ages? Knights in armor and damsels in distress? Vikings plundering monasteries? Religious dissenters burning at the stake? The dead bodies piling up as war, famine, and plague devastated Europe? Think again. While all these are part of the tapestry of the medieval era, the threads of politics, personality and war, culture, religion, education and the arts are vastly more intricate and fascinating.

The Crusades are the prototype and epitome of the Holy War. The fight to take control of the city of Jerusalem, believed to be the most sacred Holy City to two distinct religions of Christianity and Islam, has lasted far longer than the two centuries of the Crusades, and its reach has extended far further than Europe and the Middle East.

Meister Eckhart was a medieval Christian mystic whose wisdom powerfully appeals to seekers seven centuries after his death. In the modern era, Eckhart's writings have struck a chord with thinkers as diverse as Heidegger, Merton, Sartre, John Paul II, and the current Dalai Lama. He is the inspiration for the best-selling New Age author Eckhart Tolle's pen name, and his 14th-century quotes have become an online sensation. Today, a variety of Christians, as well as many Zen Buddhists, Sufi Muslims, Jewish Cabbalists, and various spiritual seekers, all claim Eckhart as their own.

Saint Augustine is one of the most influential figures in all of Christianity, yet his path to sainthood was by no means assured. Born in AD 354 to a pagan father and a Christian mother, Augustine spent the first 30 years of his life struggling to understand the nature of God and his world. He learned about Christianity as a child but was never baptized, choosing instead to immerse himself in the study of rhetoric, Manicheanism, and then Neoplatonism - all the while indulging in a life of lust and greed.

Best selling history writer Thomas Cahill continues his series on the roots of Western civilization with this volume about the contributions of ancient Greece to the development of contemporary culture. Tracing the origin of Greek culture in the migrations of armed Indo-European horsemen into Attica and the Peloponnesian peninsula, he follows their progress into the creation of the Greek city-states, the refinement of their machinery of war, and the flowering of intellectual and artistic culture.

An accessible, expert introduction to one of the greatest minds of 19th century. Whether you're completely new to him, or if you're already familiar with his work, Kierkegaard: A Single Life presents a fresh understanding of his life and thought. Kierkegaard was a brilliant and enigmatic loner whose ideas permeated culture, shaped modern Christianity, and influenced people as diverse as Franz Kafka and Martin Luther King Jr. Though few people today have read his work, that lack of familiarity with the real Kierkegaard is changing with this biography by scholar Stephen Backhouse.

Marcellino D'Ambrosio dusts off what might have been just dry theology to bring you the exciting stories of great heroes such as Ambrose, Augustine, Basil, Athanasius, John Chrysostom, and Jerome. These brilliant, embattled, and sometimes eccentric men defined the biblical canon, hammered out the Creed, and gave us our understanding of sacraments and salvation. It is they who preserved the rich legacy of the early Church for us.

Søren Kierkegaard is one of the most passionate and challenging of all modern philosophers, and is often regarded as the founder of existentialism. Over about a decade in the 1840s and 1850s, writings poured from his pen pursuing the question of existence - how to be a human being in the world? - while exploring the possibilities of Christianity and confronting the failures of its institutional manifestation around him.

Be inspired by saints like never before in My Life with the Saints by James Martin, SJ. This best-selling memoir of spiritual self-discovery is an homage to the saints who have accompanied Fr. Martin throughout his life. From a lukewarm childhood Catholicism, to the Wharton School of Business, to the executive fast track at General Electric, to the Jesuits, to a media career in Manhattan, Martin has relied on the saints to intervene in and guide his life.

A Life Observed tells the inspiring story of Lewis' spiritual journey from cynical atheist to joyous Christian. Drawing on Lewis' autobiographical works, books by those who knew him personally, and his apologetic and fictional writing, this spiritual biography brings the beloved author’s story to life while shedding light on his best-known works.

This classic text gives a broad overview of the early Christian church, how it was formed, and how it dealt with the Roman empire, which was at first hostile to Christianity, and then under Constantine the Great how it came to embrace the new faith. The author, George Hodges, also examines the many heresies that beset the church from within, and the various figures that would defend the correct definition of the faith.

The Cheese and the Worms is an incisive study of popular culture in the 16th century as seen through the eyes of one man, the miller known as Menocchio, who was accused of heresy during the Inquisition and sentenced to death. Carlo Ginzburg uses the trial records to illustrate the religious and social conflicts of the society in which Menocchio lived.

C. S. Lewis is the 20th century's most widely read Christian writer and J. R. R. Tolkien its most beloved mythmaker. For three decades they and their closest associates formed a literary club known as the Inklings, which met weekly in Lewis' Oxford rooms and a nearby pub. They read aloud from works in progress, argued about anything that caught their fancy, and gave one another invaluable companionship, inspiration, and criticism.

The Diary is an amazing narrative that chronicles the experiences of a simple, uneducated Polish nun who received a special call shortly before the outbreak of World War II. Our Lord appeared to her and instructed her to spread the message of his Divine Mercy to all, especially in our current age, which is full of so much distress and worldliness. The message of the Divine Mercy is that God loves us all of us. And He wants us to recognize that his mercy is greater than our sins, so that we will call upon him with trust, receive his mercy, and let it flow through us to others.

Pagans explores the rise of Christianity from a surprising and unique viewpoint: that of the people who witnessed their ways of life destroyed by what seemed then a powerful religious cult. These "pagans" were actually pious Greeks, Romans, Syrians, and Gauls, who observed the traditions of their ancestors. To these devout polytheists, Christians who worshiped only one deity were immoral atheists who believed that a splash of water on the deathbed could erase a lifetime of sin.

This deeply textured dual biography and fascinating intellectual history examines two of the greatest minds of European history - Desiderius Erasmus and Martin Luther - whose heated rivalry gave rise to two enduring, fundamental, and often colliding traditions of philosophical and religious thought.

The boring debate between fundamentalist believers and non-believers is finally moved on by Alain de Botton's inspiring new book, which boldly argues that the supernatural claims of religion are of course entirely false - and yet that religions still have important things to teach the secular world.