The article has the objective of understanding, through monads, the interests, difficulties and motivations of research professors when carrying out investigations in the history and epistemology of biology, after studies and discussions carried out in the context of postgraduate studies. The data were constituted through the methodology of narrative research, using the questionnaire and narrative interviews as instruments. The results were presented through monads, constructed based on Walter Benjamin and their analysis made it possible to identify senses, meanings and emotions about the motivations, interests and difficulties in historical and epistemological research. Also were identified the implicit conceptions about science and their epistemology in the narratives of researcher professors. Between the conclusions, we contrast which reading the monads revealed that the affinity for the history and epistemology of biology emerged, for most narrators, during preparatory studies and postgraduate studies, despite considering it a challenging and often lonely work.