In this occasional series we record the views and personal experience of people who have especially contributed to the evolution of ideas in the Journal's field of interest. Raul Caetano qualified in medicine in Brazil. While retaining close academic and cultural links with his native country, he has developed a career as an alcohol epidemiologist with research positions first in Berkeley,California and then at the University of Texas. He has contributed very widely to epidemiological research on drinking but with a sustained ability to develop the important ethnic dimensions of such studies.