Commissioner Rehn says the Greek crisis serves as a lesson for the eurozone as a whole.

VOA: standard.2010.02.26

"It is a lesson to many countries to open up and have far more cultural exchange and make that a priority for diplomacy.

VOA: special.2010.06.21

Students are gathering for their after-school math lesson.

VOA: special.2011.04.21

With schools closed for a holiday, some parents took the opportunity to teach their children a lesson in charity.

VOA: standard.2010.01.18

U.N.Secretary General Ban Ki-moon told BBC television that was a painful lesson, and the United Nations will make changes for next month's vote.

VOA: standard.2009.10.21