We need to take a leaf out of nature's book. Any species that clones itself will eventually be attacked by a parasite, leading to an inevitable population crash. Daniel Suarez
Yet the evil still increased, and, like the parasite of barnacles on a ship, if it did not destroy the structure, it obstructed its fair, comfortable progress in the path of life. William Banting
Thought, like any parasite, cannot exist without a compliant host. Bernard Beckett
When the ivy has found its tower, when the delicate creeper has found its strong wall, we know how the parasite plants grow and prosper. Anthony Trollope
When I came to University of California, San Francisco to work on infectious disease, I looked around to different options, and malaria was particularly interesting and fascinating to me. It's amazing that after 100 years of study of this little parasite, we've not been able to effectively control it. Joseph DeRisi