the technique of recording and generating permanent images, by the capturing and preservation of physical stimulus-patterns on a layer of photosensitive material. steming from the words Phos (light) and Graphis (stylus or paintbrush) so you could say photography is painting with light :D
Photography is a way to preserve memories, create art, share visions and experiences, tell a story, express individuality, and connect us with others who share our passion.
http://en.wikipedia.org/wiki/Phrases_from_The_Hitchhiker's_Guide_to_the_Galaxy (in case you don't get it)