Rudolf Carnap was a German-language philosopher who was active in Europe before 1935 and in the United States thereafter. He was a major member of the Vienna Circle and an advocate of logical positivism. Wikipedia
Born: May 18, 1891, Ronsdorf, Wuppertal, Germany
Died: September 14, 1970 (age 79 years), Santa Monica, CA
Influenced: Willard Van Orman Quine, Karl Popper, Thomas Samuel Kuhn, and more
Influenced by: Ludwig Wittgenstein, Gottlob Frege, Immanuel Kant, and more
Parents: Anna Carnap and Johannes S. Carnap
Spouse: Elizabeth Ina Stöger (m. 1933–1964) and Elizabeth Schöndube (m. 1917–1929)