The “International Congress for the Philosophy of Science” was held in the week of August 23–28, 1954 at the Swiss Federal Institute of Technology in Zurich, Switzerland. The Institute enjoys a very high reputation as one of the foremost schools of its kind in the world. It was at this Institute that Albert Einstein taught at the beginning of his academic career. The Congress was arranged as the Second Congress of the “Union Internationale de Philosophie des Sciences” (U.I.P.S.) which has its permanent seat in Paris, France. The first Congress of the U.I.P.S. was held in Paris in 1949. It was then that the “International Forum of Zurich” was asked to organize five years later the Congress of Zurich.