Adult Learning Theory

Issues of human rights and freedoms always inflame passions, and John Rawls's A Theory of Justice will do the same. Published in 1971, it links the idea of social justice to a basic sense of fairness that recognizes human rights and freedoms. Controversially, though, it also accepts differences in the distribution of goods and services - as long as they benefit the worst off in society.

One of the most influential books on economics ever written, Thomas Robert Malthus's An Essay on the Principle of Population remains one of the most controversial too. This 1798 work inspired naturalists Charles Darwin and Alfred Russel Wallace to develop the theory of natural selection. But it has also sparked criticism - Karl Marx famously called Malthus a "lackey of the bourgeoisie." Yet this hasn't stopped leading present-day environmentalists from taking up Malthus's ideas.

Kenneth Waltz's Theory of International Politics created a "scientific revolution" in international relations, starting two major debates. In the 1980s it defined the controversy between the neorealists, who believed that competition between states was inevitable, and the neoliberals, who believed that states could cooperate with each other. As the debate wound down with the end of the Cold War in the 1990s, a second more fundamental debate began.

Politics is one of the first books ever to investigate the concept of political philosophy. Written by the famous Greek thinker Aristotle in the fourth century BCE, it focuses on trying to understand how best to create political communities that support, serve, and improve their citizens. Aristotle investigates a number of different areas before drawing conclusions. These include an examination of existing regimes to see which are best, a look at political theories, and even an exploration of the systems of education.

Why do we want to justify our decisions, even if they appear to be irrational? The answer lies in cognitive dissonance, the mental discomfort we experience when we hold two contradictory beliefs at the same time. In A Theory of Cognitive Dissonance, first published in 1957, American social psychologist Leon Festinger investigates the problem. Festinger puts forward the idea that we have developed mechanisms to try to deal with the stress brought on by cognitive dissonance.

Though written around 1513, more than 500 years ago, Italian diplomat Niccolò Machiavelli's The Prince is still very influential. Listeners turn to it for its direct advice on the question of how to attain - and retain - power. Machiavelli's answer, in brief: use any means necessary to make sure the state survives. Given the changeable nature of politics, the strong ruler that Machiavelli describes may need to lie or cheat, deceive and, if necessary, resort to acts of violence - all the while maintaining an "image" of goodness.

First published in Germany in 1980, British historian Ian Kershaw's The "Hitler Myth" is recognized as one of the most important books ever written about Adolf Hitler and the Nazi State. Kershaw wanted to focus on what he called the "history of everyday life", and so investigated the attitude of the German public to Hitler at the time, rather than looking at the dictator from the perspective of those in positions of power. He was intrigued to find out how someone like Hitler could have become such a powerful figure.

Which president had feet bigger than his ego? Which barked like a seal? Which joked about dating mummies? Kathleen Krull uses fun and quirky facts to bring to light the human side of the 42 U.S. presidents in this "deliciously gossipy" biography.

British-born American political activist Thomas Paine wrote Rights of Man in 1791 in response to Reflections on the Revolution in France, Edmund Burke's attack on the French Revolution. Burke was wary of tearing down old institutions of government. But Paine argued that revolution is acceptable - in fact, necessary - when government ignores the rights of its people. Not surprisingly, Rights of Man proved very popular in the newly liberated United States, selling over 100,000 copies.

What really happened when the world's two greatest superpowers went head to head during the Cold War? We Now Know is a major reappraisal of the struggle for political and ideological supremacy between the United States and the Soviet Union from 1945 to the Cuban Missile Crisis of 1962.

In his 1936 book The General Theory of Employment, Interest and Money, Keynes argued that traditional economics has misunderstood the causes of unemployment. Employment is not determined by the price of labor; it is directly linked to demand in the economy. Keynes believed market economies are by nature unstable and so require government intervention. Spurred on by the social catastrophe of the Great Depression of the 1930s, Keynes set out to change the way the world thinks about economics.

US psychologist Abraham Maslow's 1943 essay "A Theory of Human Motivation" established his idea of humanistic psychology as a "third force" in the field. He outlined a new approach to understanding the mind, saying humans are motivated by their need to satisfy a series of hierarchical needs, starting with the most essential first. He thought it important for the advancement of psychology to identify, group, and rank them in terms of priority.