In Lewis Carroll's Alice's Adventures in Wonderland, the Gryphon explains that lessons are named so because they diminish or lessen over time. This humorous insight reflects the idea that learning often leads to a reduction in ignorance or misunderstanding. The Gryphon's remark highlights the playful and whimsical tone of the book, emphasizing that education and learning are ongoing processes that continually improve understanding.

Carroll uses this quote to illustrate the importance of lessons in growth and development. It suggests that as one progresses in learning, the difficulties or confusions they face become fewer, making knowledge gradually clearer. The playful wording encourages readers to view learning as a diminishing challenge that ultimately leads to greater wisdom and insight.