Voltaire: Voltaire was a prominent French philosopher during The Enlightenment who championed freedom of speech and religious tolerance through his writings.
John Locke: John Locke was an English philosopher whose ideas heavily influenced the concept of natural rights, including freedom of speech.
Jean-Jacques Rousseau: Jean-Jacques Rousseau was a Swiss-French philosopher who emphasized individual freedom and social contract theory, which laid the groundwork for modern democratic principles.