Grasp the important ideas that have served as the backbone of philosophy across the ages with this extraordinary 60-lecture series. This is your opportunity to explore the enormous range of philosophical perspectives and ponder the most important and enduring of human questions-without spending your life poring over dense philosophical texts.

We have all pondered seemingly unanswerably but significant questions about our existence - the biggest of all being, "Why are we here?" Philosophy has developed over millennia to help us grapple with these essential intangibles. There is no better way to study the big questions in philosophy than to compare how the world's greatest minds have analyzed these questions, defined the terms, and then reasoned out potential solutions. Once you've compared the arguments, the final step is always deciding for yourself whether you find an explanation convincing.

Why do "Great Books" continue to speak to us hundreds and even thousands of years after they were written? Can they deepen our self-knowledge and wisdom? Are our lives changed in any meaningful way by the experience of reading them?Tackle these questions and more in these 36 engaging lectures. Beginning with his definition of a Great Book as one that possesses a great theme of enduring importance, noble language that "elevates the soul and ennobles the mind," and a universality that enables it to "speak across the ages," Professor Fears examines a body of work that offers extraordinary wisdom to those willing to receive it.

In Your Best Brain, Professor John J. Medina - an award-winning scientist, New York Times best-selling author, and leading advocate for brain research - delivers 24 exciting lectures that probe the origins of consciousness, memory, emotion, attention, intelligence, and beyond. He focuses on five key areas of study in neuroscience: the brain’s physical structure and function, and how it enabled us to become the planet’s apex predator.

Chemistry and Our Universe: How It All Works is your in-depth introduction to this vital field, taught through 60 engaging half-hour lectures that are suitable for any background or none at all. Covering a year’s worth of introductory general chemistry at the college level, plus intriguing topics that are rarely discussed in the classroom, this amazingly comprehensive course requires nothing more advanced than high-school math. Your guide is Professor Ron B. Davis, Jr., a research chemist and award-winning teacher at Georgetown University.

An essential introduction to the history, concepts, and thinking behind philosophy that demystifies what can often be daunting subject matter, laid out in DK's signature style. 

"It doesn't take an Einstein to understand modern physics," says Professor Wolfson at the outset of these 24 lectures on what may be the most important subjects in the universe: relativity and quantum physics. Both have reputations for complexity. But the basic ideas behind them are, in fact, simple and comprehensible by anyone. These dynamic and illuminating lectures begin with a brief overview of theories of physical reality starting with Aristotle and culminating in Newtonian or "classical" physics.

Today, the US Constitution is the oldest, continually-operating instrument of government in the world. But to think of the Constitution as a fully-formed, canonical document is to miss out on an honest, well-rounded grasp of American history. Now, more than ever, any well-informed citizen should understand how the Constitution lives, breathes, and endures.

Americans wage many of today’s fiercest policy debates and culture wars over constitutional meaning. It’s because constitutional law is so fundamental to our democracy that law schools across the country teach the subject. It's the area of law that determines what federal and state governments are permitted to do, and what rights you have as an individual citizen of the US. Here, you'll get the same accessible, well-rounded introduction to constitutional law as a typical law student - but with the added benefit of noted constitutional scholar Eric Berger's brilliant insights.

Over the span of 48 lectures, four experienced lawyers and teachers recreate key parts of the first-year law student experience, introducing you to main areas of law most every beginning student studies. Enriched with famous cases from the annals of American law and powerful arguments by some of history's most successful lawyers, these lectures offer access to an often intimidating, surprisingly accessible, and civically important field.

For more than two millennia, philosophers have grappled with life's most profound and "eternal" questions. It is easy to forget, however, that these questions about fundamental issues like justice, injustice, virtue, vice, or happiness were not always eternal. They once had to be asked for the first time. This was a step that could place the inquirer beyond the boundaries of the law. And the Athenian citizen and philosopher who took that courageous step in the 5th century B.C. was Socrates.

Ever noticed that trying to calm down often produces more agitation? Or that real fulfillment can be elusive, despite living a successful life? Often, such difficulties stem from the human brain's hardwired tendency to seek pleasure and avoid pain. Modern science demonstrates that this survival mechanism served the needs of our earliest ancestors, but is at the root of many problems that we face today, such as depression, compulsive and addictive behaviors, chronic pain, and stress and anxiety.

Look beyond the abstract dates and figures, kings and queens, and battles and wars that make up so many historical accounts. Over the course of 48 richly detailed lectures, Professor Garland covers the breadth and depth of human history from the perspective of the so-called ordinary people, from its earliest beginnings through the Middle Ages.

Distilled to its essence, the ancient Greco-Roman philosophy known as Stoicism is a philosophy of personal betterment. Professor Pigliucci, who knows firsthand just how transformative a Stoic approach to life can be, has designed these 25 lessons as an enlightening introduction to the basics of Stoic philosophy and ways to incorporate its lessons into your own life.