Discussions concerning current condition of science require reference to the category of scholars' ethos. This motions is very ambiguous and thus any attempts to define it require multilevel analyse. This article signalises some of the problems connected with ethos. Referring to classical literature the author describes the notion itself, as well as its components, stressing especially category of moral norms. This enables far more detailed description of scholars' ethos, with involvement of the category of group ethos. Divagations concerning the history of scholars ethos, with the use of category of ethos group. Divagations concerning history of scholars ethos finish with description of its current functions.