As we are approaching the threshold of the 21st century, the reaction engineer can contribute more to the profession if he plays the triple role of an engineering scientist, an engineering technologist, and an engineering artist : he analyzes, models, and computes as a scientist, he uses and devises new processes and new equipment as a technologist, and he has to master, above all, the art of knowledge synthesis and redevelopment including that of his own creation and what was foreign to him.