John Winthrop quote: “We must delight in each other, make other's conditions our own, rejoice together, mourn together, labor and suffer toge…”

“On September 11, 2001, in our time of grief, the American people came together. We offered our neighbors a hand, and we offered the wounded our blood. We reaffirmed our ties to each other, and our love of community and country.”

Barack Obama (1961) 44th President of the United States of America

2011, Remarks on death of Osama bin Laden (May 2011)
Context: On September 11, 2001, in our time of grief, the American people came together. We offered our neighbors a hand, and we offered the wounded our blood. We reaffirmed our ties to each other, and our love of community and country. On that day, no matter where we came from, what God we prayed to, or what race or ethnicity we were, we were united as one American family.
We were also united in our resolve to protect our nation and to bring those who committed this vicious attack to justice. We quickly learned that the 9/11 attacks were carried out by al Qaeda — an organization headed by Osama bin Laden, which had openly declared war on the United States and was committed to killing innocents in our country and around the globe. And so we went to war against al Qaeda to protect our citizens, our friends, and our allies.

“Throughout history, human life has been enriched by diversity, and different communities have learnt from each other. But, if our different communities are to live together in peace we must stress also what unites us: our common humanity, and our shared belief that human dignity and rights should be protected by law.”

Kofi Annan (1938–2018) 7th Secretary-General of the United Nations

Truman Library address (2006)
Context: Both security and development ultimately depend on respect for human rights and the rule of law.
— Although increasingly interdependent, our world continues to be divided — not only by economic differences, but also by religion and culture. That is not in itself a problem. Throughout history, human life has been enriched by diversity, and different communities have learnt from each other. But, if our different communities are to live together in peace we must stress also what unites us: our common humanity, and our shared belief that human dignity and rights should be protected by law.

“All our communities have to make the effort to reach out to each other rather than waiting passively for gestures that may never be made. We need to write our stories and sing our songs together not necessarily in unison or in tune but in a way that makes space for all of us.”

Joni Madraiwiwi (1957–2016) Fijian politician

Opening address to the Commonwealth Parliamentary Association conference in Nadi, 6 September 2005.

“None of our republics would be anything if we weren't all together, but we have to create our history — our Yugoslavian socialist history, that is unique, in the future — that is our path; not touching the national rights of the some republics to preserve their own traditions, not at the expense of, but in the interest of the whole community, to mutually complete each other. That is what we want, and not the destruction of our unity.”

Josip Broz Tito (1892–1980) Yugoslav revolutionary and statesman

Frequently quoted fragment of Tito's speech in Split 1962 Source: YouTube https://www.youtube.com/watch?v=H7s7ldiX6lc
Other

“If we all work together, we can foster greater understanding, positive change and create a more peaceful world for ourselves, our children, our families and our communities.”

Michael Jordan (1963) American retired professional basketball player and businessman

Michael Jordan: ‘I can no longer stay silent’ http://theundefeated.com/features/michael-jordan-i-can-no-longer-stay-silent/, The Undefeated (July 25, 2016)

“We must walk together, preserving our culture and identifying but paying respect to difference, to the other person. We can work in a way pleasing to God only while respecting, appreciating and helping each other. Let us walk together!”

Gergely Kovács (1968) archbishop of Alba Iulia

Gergely Kovács, the new Archbishop of Transylvanian Catholics https://transylvanianow.com/this-is-my-diocese-i-am-coming-home-says-new-leader-of-transylvanian-catholics-archbishop-gergely-kovacs/ (February 23, 2020)