After spending two weeks as a visiting fellow at the Harvard's Kennedy School of Government in the United States in 2004, "to share lessons about civic engagement with students and faculty", Mockus returned to Harvard as a Visiting Professor of Romance Languages and Literatures to teach two Spanish classes during the Fall 2004–2005 semester.
Despois de pasar dúas semanas na Kennedy School of Government nos Estados Unidos en 2004, «para compartir experiencias sobre o compromiso cidadán que tiñan os estudantes e a facultade», Mockus regresou a Harvard como profesor visitante de linguas romance para impartir clases de español no segundo semestre do 2004.