- http://sites.google.com/site/philogf/emr-3/on-metaphor On metaphor. Article by Gabriel Furmuzachi.
- https://people.sunyit.edu/~harrell/Pepper/pep_metaphor.htm Metaphor in philosophy. Article by Stephen Pepper, reprinted from The Journal of Mind and Behavior, vol. 3, nos. 3 and 4, summer/autumn, 1982.
- http://www.poetry-portal.com/styles13.html Poetry Portal, with an account of philosophical questions arising from metaphor in poetry.