The Wedding Guest in The Rime of the Ancient Mariner What does it mean to be wise. Webster's Dictionary defines the word "wise" as being "marked by deep understanding, keen discerment". Through the telling of the ancient Mariner's tale, the Wedding-Guest became sadder and wiser. He became sad in that he identified himself with the shallow and self-absorbed mariner. However, the mariner changed his ways. The Wedding-Guest became wise through realizing that he himself needed to alter his ways.