Dialogue in science is essential for progress. But when dialogue becomes conflict or further intensifies to persecution the situation is harmful not only to science, but also to the wider society in which science exists. This is true whether the conflict is internal, in the case of Boltzmann, or external, as with Galileo and Oppenheimer against the
Introduction. Religion rampant: Hypatia, Roger Bacon, Giordano Bruno. Galileo and the inquisition. Kepler. Internal conflict. The atomic theory and positivist philosophy. N-rays. Einstein and the Copenhagen school. Oppenheimer and the AEC. Blackett, Cherwell, Tizard: Operational research and total war. The big bang versus continuous creation. Multiple versus plural photon and particle production. Missing magnetic monopoles. Conclusions. Postscript References. Glossary. Bibliographical discussion. Bibliography. Index.