“So it is worth reminding ourselves of how lucky we are to be living in the most peaceful, most prosperous, most progressive era in human history,” Obama said in the speech. “Because the world has never been less violent, healthier, better educated, more tolerant, with more opportunity for more people, and more connected than it is today,” he also said. Here are excerpts from the president’s speech as transcribed on the White House website: Obviously, this has been a tough couple of weeks, not just here in the United States but around the world. And that’s being amplified to some...