Meaning: This quote, attributed to Sir Arthur Conan Doyle, the renowned author of the Sherlock Holmes series, provides an insightful metaphor for the human mind. The analogy of the "little brain attic" and the "lumber-room of his library" suggests the importance of organizing and managing one's knowledge and thoughts. Doyle's quote encourages individuals to be selective about the information they retain in their minds, while also recognizing the value of having access to a broader range of knowledge when needed.

The concept of the "little brain attic" can be interpreted as a symbolic representation of the human mind as a storage space for information, experiences, and memories. Just as an attic in a house is used to store essential items that are frequently accessed, the "little brain attic" represents the mental space where individuals keep the knowledge and skills that they regularly use in their daily lives. This could include practical information, problem-solving abilities, and learned expertise that are essential for navigating everyday challenges and tasks.

Doyle's use of the term "furniture" to describe the contents of the "little brain attic" suggests that these are the fundamental pieces of knowledge and skills that are essential for functioning effectively in the world. By stocking the attic with these mental "furniture," individuals can ensure that they have easy access to the tools they need to address various situations and make informed decisions.

On the other hand, the "lumber-room of his library" represents a broader repository of knowledge and information that may not be immediately necessary in day-to-day life. Just as a lumber-room is used to store items that are not frequently used but may still have value or significance, the "lumber-room of his library" signifies the mental space where individuals can store additional knowledge, memories, and experiences that are not regularly accessed.

This distinction between the "little brain attic" and the "lumber-room of his library" highlights the importance of mental organization and prioritization. It suggests that individuals should be discerning about the information they choose to retain in their active memory, focusing on the essential "furniture" while relegating less frequently needed knowledge to a secondary storage space.

Furthermore, the reference to the "library" implies that individuals have the ability to expand their knowledge and access a wealth of information beyond what is immediately stored in their "little brain attic." Libraries are spaces of learning, exploration, and discovery, and by maintaining a "lumber-room" within one's mental library, individuals can ensure that they have the capacity to delve into additional resources when the need arises.

In a broader sense, Doyle's quote encourages individuals to be mindful of the contents of their minds and to approach mental organization with intention and purpose. It underscores the value of curating one's mental "furniture" while acknowledging the importance of having access to a diverse range of knowledge and experiences. Ultimately, the quote serves as a reminder of the power of the human mind to store, retrieve, and utilize information effectively, emphasizing the significance of conscious mental management and the potential for continuous learning and growth.