While its mystical and ethical teachings are not easily sharply distinguished from those of other Jewish currents, the defining doctrine of Hasidism is that of the saintly leader, serving both as an ideal inspiration and an institutional figure around whom followers are organized. In the movement's sacral literature, this person is referred to as the "Tzaddiq", the Righteous One – often also known by the general honorific "Admor" (acronym of Hebrew for "our master, teacher and Rabbi"), granted to rabbis in general, or colloquially as "Rebbe". The idea that, in every generation, there are righteous persons through whom the divine effluence is drawn to the material world is rooted in the kabbalistic thought, which also claims that one of them is supreme, the reincarnation of Moses. Hasidism elaborated the notion of the "Tzaddiq" into the basis of its entire system – so much that the very term gained an independent meaning within it, apart from the original which denoted God-fearing, highly observant people.