Association.⁹—All strong feelings are associated with a variety of allied sentiments and emotions. They stir up the memory at the same time. When we are under their influence we are reminded of similar states and we feel a renewal of them within us. Thus are formed habitual successions of feelings and notions, which, at last, when they follow one another with lightning rapidity are no longer felt as complexities but as unities. In this sense we hear of moral feelings, of religious feelings, as if they were absolute unities. In reality they are streams with a hundred sources and tributaries. Here again, the unity of the word speaks nothing for the unity of the thing.