"You don't have to rush. You have careers to launch, debts to pay, spouses to meet and marry. That's enough for now.
But in the course of your lives, without any plan on your part, you'll come to see suffering that will break your heart.
When it happens, and it will, don't turn away from it; turn toward it.
That is the moment when change is born."
Following is the text of the address by Bill and Melinda Gates, philanthropists and co-chairs of the Bill & Melinda Gates Foundation, as prepared for delivery at Stanford University's 123rd Commencement on June 15, 2014.