//Free Thinking// is a philosophical viewpoint that holds opinions should be formed on the basis of logic, reason, and empiricism, rather than authority, tradition, or other dogmas. The cognitive application of freethought is known as "freethinking", and practitioners of freethought are known as "freethinkers".

Freethought holds that individuals should not accept ideas proposed as truth without recourse to knowledge and reason. Thus, freethinkers strive to build their opinions on the basis of facts, scientific inquiry, and logical principles, independent of any logical fallacies or the intellectually limiting effects of authority, confirmation bias, cognitive bias, conventional wisdom, popular culture, prejudice, sectarianism, tradition, urban legend, and all other dogmas. Regarding religion, freethinkers hold that there is insufficient evidence to support the existence of supernatural phenomena.