For 10 points, name this author of "On Denoting", who co-authored Principia (preen-KEY-pee-uh) Mathematica.
This man claimed "the world is suffering from intolerance and bigotry" in the preface to a book in which he advocates for a four-hour workday and claims "the liberation of the oppressed has usually been inaugurated from above." In an article criticized for mixing up "meaning" and "mentioning" by P.F. Strawson, this thinker posited an example of a phrase which describes one and only one event: "the father of Charles II was executed." A statement named after this author of "In (*) Praise of Idleness" was discovered independently by Ernst Zermelo and concludes that the set of all sets that are not members of themselves must not contain itself. For 10 points, name this author of "On Denoting", who co-authored Principia (preen-KEY-pee-uh) Mathematica.
This man claimed "the world is suffering from intolerance and bigotry" in the preface to a book in which he advocates for a four-hour workday and claims "the liberation of the oppressed has usually been inaugurated from above."
Bertrand Russell