Conjectures and Refutations is one of Karl Popper’s most wide-ranging and popular works, notable not only for its acute insights into the way scientific knowledge grows, but also for applying those insights to politics and to history. It provides one of the clearest and most accessible statements of the fundamental idea that guided his work: not only our knowledge but our aims and our standards grow through an unending process of trial and error.

Groundwork of the Metaphysics of Morals (1785) is the first of Immanuel Kant's mature works on moral philosophy and remains one of the most important in the field. Kant examines the core concepts and principles of moral theory, showing that they are normative for rational agents. He aspires to lay bare the fundamental principle of morality and prove that it applies to us. Kant offers the argument that the rightness of an action is determined by the character of the principle that a person chooses to act upon.

A good book may have the power to change the way we see the world, but a great book actually becomes part of our daily consciousness, pervading our thinking to the point that we take it for granted, and we forget how provocative and challenging its ideas once were - and still are. The Structure of Scientific Revolutions is that kind of book.

Immanuel Kant's Fundamental Principles of the Metaphysics of Morals, first published in 1785, lays out Kant's essential philosophy and defines the concepts and arguments that would shape his later work. Central to Kant's doctrine is the categorical imperative, which he defines as a mandate that human actions should always conform to a universal, unchanging standard of rational morality.

Groundwork of the Metaphysics of Morals is the first of Immanuel Kant's mature works on moral philosophy and remains one of the most influential in the field. Kant conceives his investigation as a work of foundational ethics - one that clears the ground for future research by explaining the core concepts and principles of moral theory, and showing that they are normative for rational agents.

The 13 chapters of The Art of War, each devoted to one aspect of warfare, were compiled by the high-ranking Chinese military general, strategist, and philosopher Sun-Tzu. In spite of its battlefield specificity, The Art of War has found new life in the modern age, with leaders in fields as wide and far-reaching as world politics, human psychology, and corporate strategy finding valuable insight in its timeworn words.

Why have history's greatest minds - from George Washington to Frederick the Great to Ralph Waldo Emerson along with today's top performers, from Super Bowl-winning football coaches to CEOs and celebrities - embraced the wisdom of the ancient Stoics? Because they realize that the most valuable wisdom is timeless and that philosophy is for living a better life, not a classroom exercise. The Daily Stoic offers a daily devotional of Stoic insights and exercises, featuring all-new translations.

The ancient Toltecs believed that life, as we perceive it, is a dream. We each live in our own personal dream, and these come together to form the dream of the planet, or the world in which we live. Problems arise when our perception of the dream becomes clouded with negativity, drama, and judgment (of ourselves and others), because it's in these moments of suffering that we have forgotten that we are the architects of our own reality and we have the power to change our dream if we choose.

While most of us are familiar with the Underground Railroad, there was much more to the movement than helping individuals escape their bondage. In the eight lectures of The Abolitionists, Professor Kellie Carter Jackson of Wellesley College will bring you along as she traces the history of the fight to end slavery in America, from its relatively quiet origins to the turning point at Harper’s Ferry to the Civil War.

Experience a bold take on this classic autobiography as it’s performed by Oscar-nominated Laurence Fishburne. In this searing classic autobiography, originally published in 1965, Malcolm X, the Muslim leader, firebrand, and Black empowerment activist, tells the extraordinary story of his life and the growth of the Human Rights movement. His fascinating perspective on the lies and limitations of the American dream and the inherent racism in a society that denies its non-White citizens the opportunity to dream, gives extraordinary insight into the most urgent issues of our own time.

Muhammad Ali, never afraid to express himself loudly and boldly, stays true to form in Ali in Me, an eight-part audio series that explores his life and legacy, guided by his own words through never-before-heard audio recordings. Hosted by Muhammad’s widow, Lonnie Ali, and his close friend, award-winning broadcaster John Ramsey, Ali in Me goes beyond the boxing ring to delve deeply into the extraordinary life and lasting contributions The Champ made to individuals around the world.

Prosecuting attorney in the Manson trial Vincent Bugliosi held a unique insider's position in one of the most baffling and horrifying cases of the 20th century: the cold-blooded Tate-LaBianca murders carried out by Charles Manson and four of his followers. What motivated Manson in his seemingly mindless selection of victims, and what was his hold over the young women who obeyed his orders? Now available for the first time in unabridged audio, the gripping story of this famous and haunting crime is brought to life by acclaimed narrator Scott Brick.

The 10 enlightening (and often humorous) lectures of Medieval Myths and Mysteries will show you how far from the “dark” times of legend these centuries were. Uncover the facts about the Knights Templar. Reveal the truth behind the tales of legendary creatures like the Questing Beast and the unicorn. Trace the events of the Black Death and the ways it altered the world in its wake, and much more. With Professor Armstrong, you will dig deep into the ways that later generations reshaped the narrative of the medieval years and perpetuated the myths.

Over the next five years, millions of more Americans are expected to take Ozempic and other GLP-1 weight-loss drugs, which are rapidly being recognized as the miracle drugs of this century. If you’re not on them, you’ll probably know someone who is. What are the implications of the widespread use of these drugs, both on our bodies and our society? In this show, you’ll meet people across America who are either taking the jab or thinking about it, and the shocking intentional and unintentional results they are seeing.

Based on seven years of ground-breaking research and hundreds of interviews, I Thought It Was Just Me shines a long-overdue light on an important truth: Our imperfections are what connect us to each other and to our humanity. Our vulnerabilities are not weaknesses; they are powerful reminders to keep our hearts and minds open to the reality that we're all in this together.