(1884 - 1948) ~ German Marxist Activist, Theorist, Pre-WW1 Member of the German Social Democratic Party, Edited Party Newspaper Volksfreund, and a Founder Member of the Communist Party of Germany (KPD) : A German Marxist activist and theorist. He was a member of the German Social Democratic Party prior to the First World War. He edited Volksfreund, one of the party newspapers, and from, he 1916 worked on Spartakusbriefe, the official paper of the Independent Social Democratic Party (USPD). (From : Wikipedia.org.)

(1644 - 1718) ~ English Writer, Religious Society of Friends (Quakers) Thinker, Founder of the Province of Pennsylvania, an Early Advocate of Democracy and Religious Freedom : An English writer and religious thinker belonging to the Religious Society of Friends (Quakers), and founder of the Province of Pennsylvania, a North American colony of England. He was an early advocate of democracy and religious freedom, notable for his good relations and successful treaties with the Lenape Native Americans. (From : Wikipedia.org.)

(1890 - 1970) ~ British Politician and Leader of the Liberal Party : Sinclair entered the House of Commons as a Liberal Member of Parliament (MP) for Caithness and Sutherland, supporting David Lloyd George and defeating the incumbent Liberal supporter of H. H. Asquith. He rose through the Liberal ranks as the party shrank in Parliament, becoming Chief Whip by 1930. At this period he worked on land policy with Lloyd George, including the "Tartan Book" that addressed Scottish devolution. (From : Wikipedia.org.)

(1782 - 1854) ~ Father of Frenchn Liberal and Social Catholicism, Catholic Priest, Philosopher, Political Theorist, one of the Most Influential Intellectuals of Restoration France : A French Catholic priest, philosopher and political theorist. He was one of the most influential intellectuals of Restoration France. Lamennais is considered the forerunner of liberal Catholicism and social Catholicism. (From : Wikipedia.org.)

Historian of the Anarchist, Italian Movement

"Crumbling Creeds," by Robert Green Ingersoll. The Twentieth Century, N. Y., April 24, 1890.

"Trades Unions and Socialism," by Karl Kautsky, 1901, Source: International Socialist Review, Vol.1 No.10, April 1901; Translated: E. Dietzgen.

"Programme of the Social-Democratic Emancipation of Labour Group," by Georgi Valentinovich Plekhanov, Written: 1884, Source: Georgi Plekhanov: Selected Philosopohical Works, Vol I.

"Government and Labor in Early America," by Richard B. Morris, Octagon Books, New York, 1975.

"Panarchy, a Forgotten Idea of 1860," by Max Nettlau, 1909, in Kurt Zube (Ed.), On the Topic No. 9. Germany: Mackay Gesellschaft.