What’s your sentence?

Here’s an except from the book “A More Beautiful Question” by Warren Berger:

“While visiting John F. Kennedy early on in his presidency, Clare Booth Luce (a journalist) expressed concern that Kennedy might be in danger of trying to do too much, thereby losing focus. She told him “a great man is a sentence” – meaning that a leader with a clear and strong purpose could be summed up in a single line (e.g., “Abraham Lincoln preserved the union and freed the slaves”)…Your sentence might be, “He raised four kids who became happy, healthy adults” or “She invented a device that made people’s lives easier.”

What is your sentence?