This article looks at the public debate which took place in the first half of the twentieth century and has repercussions to the present day. It was about the ethical stance of scientists, and how science should be organized. In particular, it examines the positions taken by Professor F. Soddy, F.R.S. and Nobel Laureate, who stressed the responsibility of scientists for the uses made of their research, Professor Michael Polanyi, F.R.S., who emphasised the obligation of scientists to the truth and (...) the essential role of morality in the organization of science, and Professor J.D.Bernal, F.R.S., who insisted that science was practised for utilitarian reasons and should be consciously developed for the good of society. (shrink)