Who thought of Freedom of thinking and Expression?

The concept of freedom of thought and expression has roots in various philosophical traditions, but it gained significant prominence through Enlightenment thinkers such as john Locke, Voltaire, and John Stuart Mill. Locke emphasized individual rights and the importance of personal beliefs, while Voltaire championed the idea of free speech and criticized censorship. Mill's work, particularly in "On Liberty," defended the importance of free expression for societal progress. Together, these thinkers laid the groundwork for modern understandings of freedom of thought and expression.