19th-century philosophy of complexity from mathematics, astronomy, physics, chemistry, biology, and a new discipline called "sociology", which is the study of the "dynamics and statics of society". The American philosophers Charles Sanders Peirce and William James developed the pragmatist philosophy in the late 19th century. The twilight years of the 19th century in Britain saw the rise of British idealism, a revival of interest in the works of Kant and Hegel. Transcendentalism was rooted in Immanuel Kant's transcendence and German idealism, led by Ralph Waldo Emerson and Henry David Thoreau. The main belief was in an ideal spiritual state that 'transcends' the
David Livingstone promote the glory of Him to whom I owe all my hopes in time and eternity."" In 2002, David Livingstone was named among the 100 Greatest Britons following a UK-wide vote. While Livingstone had a great impact on British Imperialism, he did so at a tremendous cost to his family. In his absences, his children grew up missing their father, and his wife Mary (daughter of Mary and Robert Moffat), whom he wed in 1845, endured very poor health, and died of malaria on 27 April 1862 trying to follow him in Africa. He had six children: Only Agnes, William