“We thank all our distinguished international guests for having come to take possession with the people of our country of what is, after all, a common victory for justice, for peace, for human dignity. We trust that you will continue to stand by us as we tackle the challenges of building peace, prosperity, non-sexism, non-racialism and democracy.”

1990s, Nobel Prize acceptance speech (1993)
Context: Together, we join two distinguished South Africans, the late Chief Albert Lutuli and His Grace Archbishop Desmond Tutu, to whose seminal contributions to the peaceful struggle against the evil system of apartheid you paid well-deserved tribute by awarding them the Nobel Peace Prize. It will not be presumptuous of us if we also add, among our predecessors, the name of another outstanding Nobel Peace Prize winner, the late Rev Martin Luther King Jr. He, too, grappled with and died in the effort to make a contribution to the just solution of the same great issues of the day which we have had to face as South Africans. We speak here of the challenge of the dichotomies of war and peace, violence and non-violence, racism and human dignity, oppression and repression and liberty and human rights, poverty and freedom from want.

2016, Remarks to the People of Cuba (March 2016)
Context: We do have challenges with racial bias -- in our communities, in our criminal justice system, in our society -- the legacy of slavery and segregation. But the fact that we have open debates within America’s own democracy is what allows us to get better. In 1959, the year that my father moved to America, it was illegal for him to marry my mother, who was white, in many American states. When I first started school, we were still struggling to desegregate schools across the American South. But people organized; they protested; they debated these issues; they challenged government officials. And because of those protests, and because of those debates, and because of popular mobilization, I’m able to stand here today as an African-American and as President of the United States. That was because of the freedoms that were afforded in the United States that we were able to bring about change.

Lessons of Dr. Martin Luther King, Jr. (1990)

1970s, Remarks on Being Reelected (1972)

1920s, Ways to Peace (1926)

2000s, White House speech (2006)
Context: Ladies and gentlemen, dear friends, the 21st century has entrusted people around the world with a lasting historic mission: That is to maintain world peace, promote common development and create a brighter future for mankind. Let us work together with the international community to build a world of enduring peace, common prosperity and harmony. Thank you once again, Mr. President, for your warm welcome.

Interview with Al Jazeera (25 May 2018)

Source: Myanmar bishops call for peace and justice in war torn Kachin state https://www.vaticannews.va/en/church/news/2018-05/myanmar-bishop-kachin-conflict-peace-justice.html (3 May 2018)

1990s, Victory speech (1994)