And although Mr Hu and his group have recently given talks in universities, schools are more resistant.
They come from all over the world to teach courses, participate in seminars, collaborate in research, give talks at the weekly Mathematics Colloquium, and be available as consultants.
Once a month or so, writers (usually children's authors) such as Mini Grey, Nick Sharratt and Cathy Watts come in to give talks.
After graduating from Cornell in 1915, Moses became an instructor in the Food Department while also working in extension, giving talks about first aid.
In my B-School, there were always amazingly talented executives coming in to give talks on business and life.
I've been traveling over the last month, in Wisconsin, Iowa, Minnesota and Georgia, giving talks in communities about national security.
Three figures in fashion give talks in March: Reed Krakoff (March 21), Stefano Pilati (March 27) and Dries Van Noten (March 29).
"What I've said to people in giving talks like this in the past is, we should be ashamed of ourselves," Mr. Matasar said at a 2009 meeting of the Association of American Law Schools.
In 2013 he gave talks about his wartime experiences to schools in Suffolk.
That could mean playing chamber music, coaching student ensembles, teaching in schools, even giving talks.
I know from my own experience in giving talks about my book, There Is Life After College, when I try to explain that what students do while in college matters more than where they go.
