Graphology is a way of telling something about a person by looking at the way they write. So, if you can see somebody's writing, like a letter they wrote, you might be able to get some clues about the way they are thinking. For example, if someone's writing is very large and loopy, you might think that they have a lot of energy or that they get excited about things easily. If someone's writing is small and neat, you might think that they care a lot about detail or that they are organized. Graphology is not 100% accurate, but it can give you some good clues about how a person is feeling or thinking.