What is the symbol for learning?

There isn't one universally recognized symbol for learning. However, some common symbols used to represent learning or education include:

* Open book: This is a classic symbol of knowledge and learning, often seen in libraries or schools.

* Lightbulb: Represents a moment of insight or understanding, signifying the illumination of knowledge.

* Graduation cap: This symbol represents the completion of education and the pursuit of knowledge.

* Apple: Though not directly related to learning, the apple is often associated with knowledge due to the story of Isaac Newton and the apple falling from a tree.

* Owl: This bird is often associated with wisdom and knowledge, making it a symbol of learning.

Ultimately, the best symbol for learning depends on the context and the message you want to convey.