This Leibniz collection contains some of the philosopher’s most important works and ideas, spans three decades and illuminates the fascinating intellectual journey undertaken by him in his quest for truth. A prodigious polymath, Leibniz was a mathematician, philosopher, physicist and statesman and engaged with a sweeping range of ideas and disciplines, striving throughout his life to be at the cutting edge of scientific thinking. These Principal Essays are arranged in chronological order.

In 1945 seven of Hitler's henchmen were incarcerated as solitary inmates of the vast Spandau prison in Berlin originally built to accommodate hundreds. Every conceivable precaution was taken to ensure escape was impossible for such high-profile prisoners. Hitler's henchmen had been tried and convicted for their complicity in Hitler's campaign and had escaped the death penalty, unlike many of their former comrades.

People often think of imagination as something used only in creative endeavours. In fact, we use imagination constantly as we reminisce, anticipate, plan, daydream, read, create imagined worlds. The truth is we live in the here and now much less than we tend to think. Imagination isn’t the exception in our daily lives; it’s our default setting. Yet only now are we beginning to understand exactly how it works. From hallucination to sleepwalking, from REM sleep to delusions, neurologist Adam Zeman brilliantly guides us through the latest scientific studies in the world of the imagination.

When he was six years old, Roger Penrose discovered a sundial in a clearing near his house. Through that machine made of light, shadow, and time, Roger glimpsed a “world behind the world” of transcendently beautiful geometry. It spurred him on a journey to become one of the world’s most influential mathematicians, philosophers, and physicists. Penrose would prove the limitations of general relativity, set a new agenda for theoretical physics, and astound colleagues and admirers with the elegance and beauty of his discoveries.

In 1492, Christopher Columbus arrived on the Caribbean Island of Guanahaní to find an Edenic scene that was soon mythologized. But behind the myth of paradise, the Caribbean and its people would come to pay the price of relentless Western exploitation and abuse. In Dark Laboratory, Dr. Tao Leigh Goffe embarks on a historical journey to chart the forces that have shaped these islands: the legacy of slavery, indentured labor, and the forced toil of Chinese and enslaved Black people who mined the islands’ bounty for the benefit of European powers.

We take time for granted as it passes during every moment of our existence. Other things may change, but time remains constant and predictable. The past, the present, and the future exist within a harmonious, reliable, and never-changing system. Or at least that’s how it seems. It was Albert Einstein who, in 1905, first theorized that time might not be quite as straightforward as that. In one of the most influential papers on physics ever published[1], he proposed something called “time dilatation.”

Historian Bennett Parten provides a groundbreaking account of Sherman’s March to the Sea—the critical Civil War campaign that destroyed the Confederacy—told for the first time from the perspective of the tens of thousands of enslaved people who fled to the Union lines and transformed Sherman’s march into the biggest liberation event in American history.

Embark on a mind-expanding journey through the nature of reality itself! Is our universe one of many? Are we living in a simulation? What does quantum physics tell us about the fabric of reality? "The Beginner's Guide to Reality" breaks down these profound questions into three fascinating, accessible books that will forever change how you view existence.

A proud and reserved alien society finds its homeland destroyed in an unprovoked act of aggression, and the survivors have no choice but to reach out to the indigenous humanoids of their adopted world, to whom they are distantly related. They wish to preserve their cherished way of life, but doing so may mean changing their culture forever. Working together to save this vanishing race, a man and a woman from two clashing societies will uncover ancient mysteries with far-reaching ramifications.

Arctic explorer and American visionary Walter Wellman pioneered both polar and trans-Atlantic airship aviation, making history’s first attempts at each. Wellman has been cast as a self-promoting egomaniac known mostly for his catastrophic failures. Instead he was a courageous innovator who pushed the boundaries of polar exploration and paved the way for the ultimate conquest of the North Pole—which would be achieved not by dogsled or airplane, but by airship.

Mathematics shapes almost everything we do. But despite its reputation as the study of fundamental truths, the stories we have been told about it are wrong—warped like the sixteenth-century map that enlarged Europe at the expense of Africa, Asia and the Americas. In The Secret Lives of Numbers, renowned math historian Kate Kitagawa and journalist Timothy Revell make the case that the history of math is infinitely deeper, broader, and richer than the narrative we think we know.

Paul Dirac (1902 - 1984) was a brilliant mathematician and a 1933 Nobel laureate whose work ranks alongside that of Albert Einstein and Sir Isaac Newton. Although not as well-known as his famous contemporaries Werner Heisenberg and Richard Feynman, his influence on the course of physics was immense. His landmark book, The Principles of Quantum Mechanics, introduced that new science to the world and his "Dirac equation" was the first theory to reconcile special relativity and quantum mechanics.

An expansive and revelatory historical exploration of the multicultural, water-seeking, land-destroying settlers of the most arid corner of North America, arguing that in order to know where the United States is going in the era of mass migration and climate crisis we must understand where the Southwest has already been.

As the failures of physicalism begin to shake the confidence of even the most biased of its supporters, a new view on the nature of reality is establishing itself as the only tenable alternative: Analytic Idealism. According to it, there is a world out there independent of our individual minds, but such world is—just like ourselves—also mental or experiential. While being a realist, naturalist, rationalist, and even reductionist view, Analytic Idealism flips our culture-bound intuitions on their head.

In this illuminating debut, Yoni Appelbaum, historian and journalist for The Atlantic, shows us that this idea has been under attack since reformers first developed zoning laws to ghettoize Chinese Americans in nineteenth-century Modesto, California. The century of legal segregation that ensued—from the zoning laws enacted to force Jewish workers back into New York’s Lower East Side to the private-sector discrimination and racist public policy that trapped Black families in Flint, Michigan to Jane Jacobs’ efforts to protect her vision of the West Village.