I think this is the right book at the right time, given the last two staggering pandemics caused by unknown Viruses and their tremendous impact on human life. This work is the synthesis of years of research that led to a thesis on AIDS, the proposal to create a Center for Medicines and Vaccines, and this Theory of Viruses — all the result of paying deep attention to the issues of deforestation and toxic poisons that have dramatically bathed the Earth. The author crosses the frontiers of what is known to science and thoroughly explores the topic of viruses. Here, she contributes one more piece to fit into the endless questions that scientific research represents: portray and propose an innovative framework to understand and solve the very large and complex problems of disease caused by viruses.