"A man of great memory without learning hath a rock and a spindle and no staff to spin"

This quote by George Herbert is a reminder that understanding and knowing are important for success. He is recommending that a person with a terrific memory but no learning is like having a rock and a spindle, however no staff to spin. To put it simply, they have the tools to do something, but no knowledge of how to use them. This is a metaphor for how understanding and knowing are necessary to turn prospective into something tangible. Without knowledge and learning, a person's capacity is squandered. This quote is a tip that understanding and learning are important for success. It is necessary to take the time to learn and obtain knowledge in order to make the most of our potential.