Ferdinand Édouard Buisson was a French educational bureaucrat, pacifist, and Radical-Socialist politician. He presided over the League of Education from 1902 to 1906 and over the Human Rights League (LDH) from 1914 to 1926. In 1927, the Nobel Peace Prize was awarded to him jointly with Ludwig Quidde. Philosopher and educator, he was Director of Primary Education. He was the author of a thesis on Sebastian Castellio, in whom he saw a "liberal Protestant" in his image. Ferdinand Buisson was the president of the National Association of Freethinkers. In 1905, he chaired the parliamentary committee to implement the separation of church and state. Famous for his fight for secular education through the League of Education, he coined the term laïcité ("secularism").

The Human Rights League of France is a Human Rights NGO association to observe, defend and promulgate human rights within the French Republic in all spheres of public life. The LDH is a member of the International Federation of Human Rights Leagues (FIDH).