The nature of analogies is described and exemplified. Thinking with the help of analogies is a natural process that even young children seem able to handle, given certain conditions. This is illustrated. Various kinds of analogy are mentioned and how they can support understanding is discussed. Analogies may also help learners change their perspective or the way they look at the world. Nevertheless, they have limitations and how these might be dealt with is outlined. Steps for using analogies to support understanding are provided.