Margaret Thatcher the United Kingdom; despite the passage of time, debate over the complicated legacy of Thatcherism persists. Margaret Hilda Roberts was born on 13 October 1925, in Grantham, Lincolnshire. Her parents were Alfred Roberts (1892–1970), from Northamptonshire, and Beatrice Ethel (née Stephenson, 1888–1960), from Lincolnshire. She spent her childhood in Grantham, where her father owned two grocery shops. In 1938, prior to the Second World War, the Roberts family briefly gave sanctuary to a teenage Jewish girl who had escaped Nazi Germany. Margaret, with her pen-friending elder sister Muriel, saved pocket money to help pay for the teenager's journey. Alfred Roberts
Isaac Newton Isaac Newton Sir Isaac Newton (25 December 1642 – 20 March 1726/27) was an English mathematician, physicist, astronomer, theologian, and author (described in his own day as a "natural philosopher") who is widely recognised as one of the most influential scientists of all time, and a key figure in the scientific revolution. His book "Philosophiæ Naturalis Principia Mathematica" ("Mathematical Principles of Natural Philosophy"), first published in 1687, laid the foundations of classical mechanics. Newton also made seminal contributions to optics, and shares credit with Gottfried Wilhelm Leibniz for developing the infinitesimal calculus. In "Principia", Newton formulated the laws of motion