Jules Henri Poincare was a French philosopher of foundations, methods, and implications of science.
Jules Henri Poincaré ( [ ʒyl ɑ̃ʁi pwɛ̃kaʁe ] ; 29 April 1854 -- 17 July 1912 ) was a French mathematician , theoretical physicist , engineer , and philosopher of science . Philosophy of science is a sub-field of philosophy concerned with the foundations , methods , and implications of science .