“Glory and tragedy, courage and stupidity - one set of truths didn't negate the other. For war was contradiction, as was the history of America.”
― Barack Obama, A Promised Land

" THERE IS NOT a Black America and white America and a Latino America and an Asian America. There's the United States of America.

It was probably the line most remembered from my 2004 converntion speech. I'd intended it more as a statement of aspiration than a describption of reality, but it was an aspiration I believed in and a reality I strove for. The idea that our common humanity mattered more than our differences was stitched into my DNA." 

― Barack Obama, A Promised Land

“our common humanity mattered more than our differences”，虽然出生和成长在一个强制单一化的社会，但我仍然非常认同这个观点。。

“I don’t know. What I can say for certain is that I’m not yet ready to abandon the possibility of America—not just for the sake of future generations of Americans but for all of humankind. For I’m convinced that the pandemic we’re currently living through is both a manifestation of and a mere interruption in the relentless march toward an interconnected world, one in which peoples and cultures can’t help but collide. In that world—of global supply chains, instantaneous capital transfers, social media, transnational terrorist networks, climate change, mass migration, and ever-increasing complexity—we will learn to live together, cooperate with one another, and recognize the dignity of others, or we will perish. And so the world watches America—the only great power in history made up of people from every corner of the planet, comprising every race and faith and cultural practice—to see if our experiment in democracy can work. To see if we can do what no other nation has ever done. To see if we can actually live up to the meaning of our creed.”
― Barack Obama, A Promised Land