“I am convinced that in order to move forward, we must say openly to each other the things we hold in our hearts, and that too often are said only behind closed doors. There must be a sustained effort to listen to each other; to learn from each other; to respect one another; and to seek common ground.”

Source: Excerpts of letter to his first wife (14 July 1975)

2008, A World that Stands as One (July 2008)
Context: History reminds us that walls can be torn down. But the task is never easy. True partnership and true progress requires constant work and sustained sacrifice. They require sharing the burdens of development and diplomacy; of progress and peace. They require allies who will listen to each other, learn from each other and, most of all, trust each other.

2017, Farewell to Staff Members (January 2017)
Context: Our democracy is not the buildings, not the monuments. It's you being willing to work to make things better and being willing to listen to each other and argue with each other and come together and knock on doors and make phone calls and treat people with respect. And that doesn't end. This is just... this is just a little pit stop. This is not a period, this is a comma in the continuing story of building America.

To My People (July 4, 1973)
Source: Assata: An Autobiography

As quoted in his obituary, Daily Telegraph (4 November 2009) http://www.telegraph.co.uk/news/obituaries/science-obituaries/6496558/Claude-Levi-Strauss.html
Context: The idea behind structuralism is that there are things we may not know but we can learn how they are related to each other. This has been used by science since it existed and can be extended to a few other studies — linguistics and mythology — but certainly not to everything.
The great speculative structures are made to be broken. There is not one of them that can hope to last more than a few decades, or at most a century or two.

2016, Young Leaders of the Americas Initiative Town Hall (March 2016)
Context: And I think one of the things that's important for bringing about further progress is that we listen to each other and we understand our differences. I don't think it's necessary for us to all speak one language, or all have the same foods, or all have the same customs. But I do believe that there are some universal principles that are important. I believe that the most important principle is a very simple one that is at the heart of most of the world’s great religions, which is treat somebody the same way you’d want to be treated. And if you start with that basic premise, then we will continue to make progress. But I also think that in order for us to make progress, we have to have that fellow feeling and we have to combine that with the use of our brains and reason, and our intellect. […] That requires not just a strong heart, but also using our heads. And if we do those two things, then I feel confident that we'll make progress.

2010s, 2016 Democratic National Convention (2016)

2000s, 2001, Islam is Peace (September 2001)
Context: America counts millions of Muslims amongst our citizens, and Muslims make an incredibly valuable contribution to our country. Muslims are doctors, lawyers, law professors, members of the military, entrepreneurs, shopkeepers, moms, and dads, and they need to be treated with respect. In our anger and emotion, our fellow Americans must treat each other with respect.

The New Science 144 (1744)