I think computer viruses should count as life ... I think it says something about human nature that the only form of life we have created so far is purely destructive. We've created life in our own image. Stephen Hawking
What more fiendish proof of cosmic irresponsibility than a Nature which, having invented sex as a way to mix genes, then permits to arise, amid all its perfumed and hypnotic inducements to mate, a tireless tribe of spirochetes and viruses that torture and kill us for following orders. John Updike
It seems likely that most if not all the genetic information in any organism is carried by nucleic acid - usually by DNA, although certain small viruses use RNA as their genetic material. Francis Crick
We need not seek our own best selves, and in the meantime we inoculate ourselves against the viruses of age and idealism, which, as the advertising agencies well know, depress sales and sour the feasts of consumption. Lewis H. Lapham
Computer viruses have since become a worldwide problem. It begins to look as if parasites are inevitable in any system of life. Matt Ridley
Our examination of computer viruses leads us to the conclusion that they are very close to what we might define as "artificial life." Rather than representing a scientific achievement, this probably represents a flaw in our definition. Gene Spafford