Open society in the context of "The Open Society and Its Enemies"

Liberal democracy, also called Western-style democracy, or substantive democracy, is a form of government that combines the organization of a democracy with ideas of liberal political philosophy. Common elements within a liberal democracy are: elections between or among multiple distinct political parties; a separation of powers into different branches of government; the rule of law in everyday life as part of an open society; a market economy with private property; universal suffrage; and the equal protection of human rights, civil rights, civil liberties, and political freedoms for all citizens. Substantive democracy refers to substantive rights and substantive laws, which can include substantive equality, the equality of outcome for subgroups in society. Liberal democracy emphasizes the separation of powers, an independent judiciary, and a system of checks and balances between branches of government. Multi-party systems with at least two persistent, viable political parties are characteristic of liberal democracies.

Governmental authority is legitimately exercised only in accordance with written, publicly disclosed laws adopted and enforced in accordance with established procedure. To define the system in practice, liberal democracies often draw upon a constitution, either codified or uncodified, to delineate the powers of government and enshrine the social contract. A liberal democracy may take various and mixed constitutional forms: it may be a constitutional monarchy or a republic. It may have a parliamentary system, presidential system, or semi-presidential system. Liberal democracies are contrasted with illiberal democracies and dictatorships. Some liberal democracies, especially those with large populations, use federalism (also known as vertical separation of powers) in order to prevent abuse and increase public input by dividing governing powers between municipal, provincial and national governments. The characteristics of liberal democracies are correlated with increased political stability, lower corruption, better management of resources, and better health indicators such as life expectancy and infant mortality.

Sir Karl Raimund Popper CH FRS FBA (28 July 1902 – 17 September 1994) was an Austrian–British philosopher, academic and social commentator. One of the 20th century's most influential philosophers of science, Popper is known for his rejection of the classical inductivist views on the scientific method in favour of empirical falsification made possible by his falsifiability criterion, and for founding the Department of Philosophy at the London School of Economics and Political Science. According to Popper, a theory in the empirical sciences can never be proven, but it can be falsified, meaning that it can (and should) be scrutinised with decisive experiments. Popper was opposed to the classical justificationist account of knowledge, which he replaced with "the first non-justificational philosophy of criticism in the history of philosophy", namely critical rationalism.

In political discourse, he is known for his vigorous defence of liberal democracy and the principles of social criticism that he believed made a flourishing open society possible. His political thought resides within the camp of Enlightenment rationalism and humanism. He was a dogged opponent of totalitarianism, communism, nationalism, fascism, and other kinds of (in Popper's view) reactionary and irrational ideas, and identified modern liberal democracies as the best-to-date embodiment of an open society.

Secular liberalism is a form of liberalism in which secularist principles and values, and sometimes non-religious ethics, are especially emphasised. It supports the separation of religion and state. Moreover, secular liberals are usually advocates of liberal democracy and the open society as models for organising stable and peaceful societies.

Secular liberalism stands at the other end of the political spectrum from religious authoritarianism, as seen in theocratic states and illiberal democracies. It is often associated with stances in favour of social equality and political freedom.