From the Scottish economist David Hume to the German scholar Friedrich Nietzsche, this book brings together the most prominent philosophers of the 18th and 19th centuries. It covers the works and ideas of Jean-Jacques Rousseau, Immanuel Kant, Moses Mendelssohn, Jeremy Bentham, Arthur Schopenhauer, Soren Kierkegaard, Karl Marx, and many others. An in-depth biography of each philosopher offers a look at their personal life and the historical context of their most stimulating ideas. Readers can closely examine the way these philosophers grappled with timeless questions of morality, human nature, and social order.