The present text analyses the links between theory and empiria, induction and deduction as a scientific method, the concept and use of theoretical resource of ‘ideal types’ and the impact of researcher subjectivity in the research. The discussion gets in account the contributions of Max Weber and Paul Feyerabend and explores issues that are shared by both authors, others where the positions of these, without being shared, are bordering, and other times you will find original antinomic between.