Algernon Sidney or Sydney (14 or 15 January 1623 - 7 December 1683) was an English politician and member of the Long Parliament. A republican political theorist, colonel and commissioner of the trial of King Charles I of England, he opposed the king's execution. Sidney was later charged with plotting against Charles II, in part based on his work, Discourses Concerning Government, used by the prosecution as a witness at his trial. He was executed for treason. After his death, Sidney was revered as a "Whig patriot–hero and martyr".
The works of Algernon Sidney, along with those of contemporary John Locke, are considered a cornerstone of western thought. Sidney's most famous work, Discourses on Government, cost him his head. However, the ideas it put forth would survive and ultimately culminate in the founding of the United States. Algernon Sidney directly opposed the divine right of kings political theory by suggesting ideas such as limited government, voluntary consent of the people and the right of citizens to alter or abolish a corrupt government. His Discourses on Government have been called "the textbook of the American revolution".
This article uses material from the Wikipedia article "Algernon Sidney" as of 28 Nov 2017, which is released under the Creative Commons Attribution-Share-Alike License 3.0.