Modern philosophy will determine the scope of one's use of "modern philosophy." How much of Renaissance intellectual history is part of modern philosophy is disputed: the Early Renaissance is often considered less modern and more medieval compared to the later High Renaissance. By the 17th and 18th centuries the major figures in philosophy of mind, epistemology, and metaphysics were roughly divided into two main groups. The "Rationalists," mostly in France and Germany, argued all knowledge must begin from certain "innate ideas" in the mind. Major rationalists were Descartes, Baruch Spinoza, Gottfried Leibniz, and Nicolas Malebranche. The "Empiricists," by contrast, held that knowledge
Father of surgery the veins. He has been called the "father of ancient surgery". The Scotsman John Hunter (1728–1793) was known for his scientific, experimental approach to medicine and surgery. He has been called the "father of modern surgery". The American surgeon Philip Syng Physick (1768–1837) worked in Philadelphia and invented a number of new surgical methods and instruments. He has been called the "father of modern surgery". The Englishman Joseph Lister (1827–1912) became well known for his advocacy of the use of carbolic acid (phenol) as an antiseptic, and was dubbed the "father of modern surgery" as a result. The German Theodor