David Sloan Wilson, Distinguished Professor of Biology and Anthropology at Binghamton University, State University New York, was one of the most influential professors I met as a grad student going for my PhD in System Science (1996).
David has an annual “Darwin’s birthday” event at his home that my wife and I attended. He gave me the plastic "Darwin Fish" that occupies an honored place on the bookcase in our master bedroom (see photo - it is like a “Jesus Fish” but with feet and the word “Darwin” on it).