This might have set me now on the usual pattern of fond reminiscences of teachers and postdoctorate mentors. But, in fact, I seem to have fled from teachers, mentors and existing disciplines. As a result, no one influenced my scientific life more than this uncle. The wonder is not, perhaps, that my scientific life ran against pattern, but that it ran and developed at all.
While still an adolescent, my uncle had fallen in love with a certain branch of mathematics, and he remained utterly faithful to it throughout his life. He left Poland for France at age 20, not for political or economic reasons but as an "ideological" refugee, moved by repulsion for the excessively abstract "Polish mathematics" then in the process of being invented by a man named Waclaw Sierpinski, and by attraction for the Poincaré school that ruled in Paris in 1920. As a postdoc (the function ...