"He would go on vacation and bring back subway maps. He would go places with his family, and he would talk about the trains instead of the places." — Stefanie McGee, on friend and Amtrak engineer Brandon Bostian, who operated the train involved in the deadly derailment in Philadelphia this week.
"If we're all supposed to answer hypothetical questions, knowing what we know now, what would you have done? I would have not engaged. I would not have gone into Iraq." — Jeb Bush, a likely Republican presidential candidate, during a campaign stop in Arizona on his brother's decision to invade Iraq in 2003.
"Let me underscore, the United States keeps our commitments." — President Barack Obama, pledging to protect the security of anxious Persian Gulf nations in light of any nuclear deal with Iran.