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Life and ideas of John Locke, including Locke's 'tabula rasa' empiricism (no innate ideas), his effort to distinguish between primary and secondary qualities in an object that exists in the external world, and his concept of the 'social compact' to which he argued we all consent by virtue of our willingness to draw advantage from the society we live in, and which society's functioning requires a government we are obliged thereby to obey.

Video: 
Prof Arthur Holmes, Wheaton College. Lecture on John Locke