At long last, we may be returning to the original two-sided sense of the word virus, which originally signified either a life-giving substance or a deadly venom. Viruses are indeed exquisitely deadly, but they have provided the world with some of its most important innovations. Creation and destruction join together once more.

A Planet of Viruses: Second Edition (ed. University of Chicago Press, 2015) - ISBN: 9780226320267