Tone varies to express the full range of human feeling and thought. For instance, the tone may be formal, serious, or passionate (sorrowful, loving, angry); or it might be intimate, light-hearted, or calmly meditative; or can even be witty or ironic. The term is usually used to refer to the tone of language in narrative or drama, or the tone of a narrative or lyric persona. (See also voice and point of view.)