A mind needs books as a sword needs a whetstone, if it is to keep its edge.
[Speech] A MIND NEEDS BOOKS AS A SWORD NEEDS A WHETSTONE, IF IT IS TO KEEP ITS EDGE. - Tyrion's Insight
Value of knowledge and learning
George R.R. Martin through his character Tyrion Lannister, highlights the essential role of continuous learning and knowledge in maintaining a sharp mind. This metaphorical statement from "Game of Thrones" underscores the importance of intellectual engagement for personal growth and acuity.
Background
George R.R. Martin
Author
"Game of Thrones," 1996