In 1987 he won the Pacem in Terris Award, an award named after a letter by Pope John XXIII that calls upon people to secure peace among nations.
Ngo-1987 wanqoba i-Pacem e-Terris Award, umklomelo obizwa ngokuthi incwadi ngemuva kukaPapa John XXIII ocela abantu ukuba bathole ukuthula phakathi kwezizwe.