Qualitative and quantitative methods are often presented as opposed or contradictory. The present article suggests that these two types of methods have, in fact, much in common and are bound by the same scientific criteria. Not only are their roles, in human sciences, complementary, but also 1) both their analyses are defined by their representative character, 2) their results must characterize a specific group, 3) their characterizations must be adapted according to individual variations, 4) their analyses must establish links between the studied objects/subjects and 5) their analyses are subject to the necessary tension which stems from the obligation of grouping the results without disregarding the distinctive features of the data.