Abstract
When I was pondering what I should write about Lakatos in this article, I ran into what seemed an insuperable difficulty. On one hand I thought that part of my job should be to give a portrait of Lakatos' personal manner. This would be informative from the point of view of history of thought, as it would help people read his works with greater understanding. And it would be interesting, if I succeeded at all: everyone who knew Lakatos would agree that he was one of the most remarkable people they had met. On the other hand memorial essays tend to give portraits whic are all sweetness and light. But such a portrait of Lakatos would not b a portrait of Lakatos. Everyone has his dark and his light side; sometimes we see one, occasionalley the other. But in Lakatos both were simultaneously and brilliantly displayed at every instant.