First Principles

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First, First aid, First to file and first to invent, First Beeline, First Minister and Deputy First Minister of Northern Ireland, First London, First Boston, First baseman, First Minister of Scotland, FIRST Robotics Competition, First West Yorkshire, First Student, First Worcester, First aid kit, First Act, First lady, First contact, First family, First Time, First woman, First degree, First impression, First Love, B2 First, First Fruits, First Light, First ladies of Pennsylvania, First American, First Nations, Who's on First?, First person, First Union, First Line, First man or woman, Credit Suisse First Boston, Ɂakisq̓nuk First Nation, FIRST Tech Challenge, First ladies of Nevada, First Fleet, First of May, Kʼómoks First Nation, First Horizon Bank, First Things First (album), First ascent, First National Pictures, First Minister of Wales, Deputy First Minister of Scotland, Singaporeans First, First Things First, First Cut, The First Noel, First-order logic, Stoney Nakoda First Nation, First-person narrative, FIRST Lego League Challenge, First Hampshire & Dorset, First Glasgow, List of first ladies of Minnesota, First Ministers' conference, First-class cricket, First responder, First Artists, First Lady of the United States, First-order, First Nehru ministry, First Step, First ladies and gentlemen of Alaska, First Nations in Ontario, First ladies and gentlemen of North Carolina, First-person (video games), First Lady of Ethiopia, First-rate, First Kiss, First and Last, First Album, First ladies and gentlemen of Guam, First South West, First grade, First ladies and gentlemen of Arkansas, First ladies of Wisconsin, First principle, First strike, First ladies and gentlemen of India, First 100 days of the first Trump presidency, First Merchants Corporation, First Republic of Korea, First American Financial Corporation, First Lady of Venezuela, First-hitting-time model, First Scotland East, First Chicago Bank, Breadth-first search, First Data, First Bus East of England, First-foot, Dehcho First Nations, First Lord of the Admiralty, First minister, First ladies and gentlemen of Oklahoma, First Growth, Be First, First ladies and gentlemen of the Philippines, Clovis First, For the First Time, First Dates, RSS First Step, FIRST Championship, First West of England, First Blood, First Nations in Canada, First Presidency (LDS Church), First pass effect, First sergeant, First ladies and gentlemen of Mexico, First ladies of Maryland, First Lady of the Gambia, First day of issue, First-wave feminism, FirstGroup, First ladies of Florida, First white child, First Folio, First Expired, First Out, First Hill, Seattle, Love at First Sight, First Things First (talk show), First World problem, First Evil, First Internet Bank, Maxillary first premolar, Wizard's First Rule, The First 48, First-mover advantage, First Second Books, Ceremonial first pitch, First lieutenant, First Church, Mitaanjigamiing First Nation, First hand, Certified first responder, Sipekne'katik First Nation, First class, First ladies of North Dakota, First period, Sq'éwlets First Nation, The First, First ladies and gentlemen of Montana, First Lady of Brazil, First Sea Lord, First ladies and gentlemen of Gabon, First Twenty Years