Frederick Winslow Taylor (March 20, 1856 – March 21, 1915) was an American mechanical engineer. He was a mechanic and laborer, he graduated as a mechanical engineer studying at night. He wrote the book 'The Principles of Scientific Management', published in 1911. He is considered 'the father' of Scientific Administration, for proposing the use of Cartesian scientific methods in business administration. His focus was efficiency and operational effectiveness in industrial and commercial administration.