For curious nonmathematicians and armchair algebra buffs, John Derbyshire discovers the story behind the formulae, roots, and radicals. As he did so masterfully in Prime Obsession, Derbyshire brings the evolution of mathematical thinking to dramatic life by focusing on the key historical players. Unknown Quantity begins in the time of Abraham and Isaac and moves from Abel's proof to the higher levels of abstraction developed by Galois through modern-day advances. Derbyshire explains how a simple turn of thought from ?this plus this equals this? to ?this plus what equals...

To his fellow conservatives, John Derbyshire makes a plea: Don't be seduced by this nonsense about "the politics of hope." Skepticism, pessimism, and suspicion of happy talk are the true characteristics of an authentically conservative temperament. And from Hobbes and Burke through Lord Salisbury and Calvin Coolidge, up to Pat Buchanan and Mark Steyn in our own time, these beliefs have kept the human race from blindly chasing its utopian dreams right off a cliff.

Recently, though, various comforting yet fundamentally idiotic notions of political correctness and wishful thinking have taken...

This book is mainly a collection of speeches made and essays published in 2013. Most of the material appeared on VDARE.com, an online magazine dedicated to frank discussion of the National Question, which embraces issues of immigration, population, race, culture, language, religion, and national identity.