Commentary: George W. Bush: We rise or fall together — and we are determined to rise

This is a solemn and challenging time in the life of our nation and world. A remorseless, invisible enemy threatens the elderly and vulnerable among us — and some of the healthiest, too. It challenges our sense of safety, security and community. Our children are separated from their teachers and their friends in a way that is hard for them to understand. Many have lost loved ones, jobs and businesses while confronting fear and loneliness.