Germany must become more international. Only science and research of the highest level can ensure our future. Last year, a program linking individual German research groups in related fields went international, starting with hadron physics. The graduate colleges, as they're called, aim to give PhD students more guidance, networking opportunities, and international experience than is typical in Germany. And France, despite having less brain drain than Germany or the UK, has offices in the US to help French scientists find jobs back home.
People learn another culture and language.
It generates new ideas, links, and tolerance. And when they go back, they should be ambassadors. More than anything else, it's the internationalization of higher education that led to the Bologna Declaration. With university exchanges increasingly popular, it's become necessary to compare systems that are often opaque to outsiders. It's a jungle of different types of study programs and diplomas.