A collection of memoirs, reminiscences and biographical details regarding Sir Derek Barton (1918-1998), who was one of the most influential organic chemists of the 20th century. The chapters are contributed by some of his many students, co-workers and scientific colleagues, all of whom testify to his fascinating character and true genius. They offer glimpses at Sir Derek’s scientific life, his sense of humour and his modus operandi as a teacher of research methods.