In my life, I have pursued interests in <strong>mathematics</strong>, <strong>philosophy</strong>, <strong>computer</strong> <strong>science</strong>, <strong>community development</strong>, <strong>educational research</strong>, the <strong>environment</strong> and <strong>sculpture</strong>—each of which I found intellectually challenging and wrote about. These disciplines have run as threads through a series of interconnected careers, as on my website (<strong><em>http://GerryStahl.net</em></strong> and in this e-Library. I retired as professor emeritus in computing and informatics at Drexel University.<br>
