Sir '''Karl Popper''' (1902-1994) was an Austrian-born philosopher of science widely regarded as one of the greatest philosophers of science of the 20th century,<ref>{{hnb|Stanford|2006}}</ref> who influenced the philosophy of science and politics. | Sir '''Karl Popper''' (1902-1994) was an Austrian-born philosopher of science widely regarded as one of the greatest philosophers of science of the 20th century,<ref>{{hnb|Stanford|2006}}</ref> who influenced the philosophy of science and politics. |