primary-sources

The 'Preamble' chapter of Robert Jungk's 'Brighter than a Thousand Suns' serves as an introduction outlining the scope and limitations of the book, emphasizing its focus on Western atomic scientists due to restricted access to Soviet sources. It includes acknowledgments to numerous scientists and contributors who provided information, highlighting the author's commitment to accuracy and firsthand accounts. The chapter also sets a reflective tone on the identity and moral considerations of scientists beyond their scientific achievements.