Thomas Robert Malthus

He was not only respected in his time by contemporaneous intellectuals for his clarity of thought and willingness to focus on the evidence at hand, but he was also an engaging writer capable of presenting logical and mathematical concepts succinctly and clearly. In addition to writing principles texts and articles on timely topics such as the corn laws, he wrote in many venues summarizing his initial works on population, including a summary essay in the Encyclopædia Britannica on population. [The image comes from “The Warren J. Samuels Portrait Collection at Duke University.”]