"Just as physicists recognise light either as electromagnetic waves or as particulate photons, depending on the context, so biologists can profitably regard viruses both as exceptionally simple microbes and as exceptionally complex chemicals".
- R Dulbecco and HS Ginsberg, 1980. Virology (originally published as a section of Microbiology, 3rd. Edn., by Davis et al., Harper and Row, Hagerstown); p. 855.
Copyright Ed Rybicki, 1996, unless otherwise stated