Which quotation from the interview best explains why ingersoll believes imagination is important to the well-being of society? "every beautiful thought is a teacher; every noble line speaks to the brain and heart." "the civilization of man depends upon the development, not only of the intellect, but of the imagination." "the stage should not be dogmatic; neither should its object be directly to enforce a moral." "the great thing for the drama to do, and the great thing it has done, and is doing, is to cultivate the imagination."