Compositions   1916: Cello Concerto 1920: Choros No 1 for Guitar 1929: Twelve Studies for Guitar 1930: Bachianas Brasileiras Nos 1 & 2 1939: New York Skyline 1945: Bachianas Brasileiras Nos 5 & 9	Philosophy 1900: Russell: Principia Mathematica     1929: Heidegger: What is Philosophy?     1943: Sartre: Being and Nothingness 1956: Dewey: Reconstruction in Philosophy