First I must apologise for not giving this talk in your own language. I have found Korean people very tolerant of foreigners who do not know Korean. Please extend this tolerance to me now. Secondly I should like to say that I feel honoured at being asked to speak to the Korean Society of Mechanical Engineers on this occasion. It has been a pleasure to work with Korean colleagues in the Profession of Mechanical Engineering and it is a privilege to address their Professional Society. In Britain, our Professional body is the Institution of Mechanical Engineers which was founded in 1847 by George Stephenson, inventor of the steam locomotive,