The United States is a melting pot. Like John F. Kennedy said, it's a nation of immigrants. But Donald Trump wants to build a fence that clearly makes the statement: "You and I are divided. We're different, and you're dangerous." That kind of thinking stops human, civilized evolution. It's dangerous to create that kind of tension.
Cuba was fantastic, at least just in terms of... Not to romanticize or glorify it, but just seeing a place that had not really been touched by the hand of American capitalism. Because it's a genuinely different place. A lot of times when you travel, things start to feel the same from place to place to place, because the same people own everything all around the world.
The proper way to create friends is to have a warm heart, not simply money or power. The friend of power and the friend of money are something different.
We all live in our own world. But if you look up at the starry sky - you'll see that all the different worlds up there combine to form constellations, solar systems, galaxies.
You can never solve a problem on the level on which it was created. Insanity: doing the same thing over and over again and expecting different results. A life lived for others is a life worthwhile.