This interview has been done within the context of a current reseach. It reflects three general common aspects in Subjectivity reseach processes: the epistemological aspect, the methodological aspect and, what traditionally has been called "operative aspect". In this interview this aspect is called dynamic relation processes inherent to the method. Here the tensions within the mentioned aspects is shown making explicit the historical and cultural perspective that the interwiewee has been developed as well as his qualitative epistemology proposal.