The Georgia Southern University where Luis A. Aguilar gave the commencement address Saturday has students of more diverse origins, he observed, than the Georgia Southern College that awarded him his bachelor’s degree in 1976.Of course, today’s university, with more than 20,000 students, is also much bigger than the college that gave rise to it was 37 years ago. More than 3,200 degrees were awarded this week, about three-fourths of them in Saturday’s bachelor’s degree ceremony at Paulson Stadium.In this setting, Aguilar, now one of five commissioners of the federal Securities and Exchange Commission, noted that in 1976 the college had no football team and only about 6,000 students, mostly from the Southeast.“Today, Georgia Southern is a major university with more than 20,000 students coming from, well, 49 states — we don’t seem to allow North Dakota students here — and over 80 countries. And the Eagles, both in football and other sports, will soon be dominating the Sun Belt Conference,” Aguilar said.The North Dakota quip drew laughter; the conference comment, cheers.Aguilar talked about the university’s transformation, the unexpected technological changes 37 years have brought, and his own living of “the American dream.”