We have all learned everything we know physically—from walking to running a marathon—by trial and error, so there's no reason to become our own worst enemies when we suffer a setback. From time to time everyone falls short of their goals. It's an illusion to believe that champions succeed because they do everything perfectly. You can be certain that every archer who hits the bull's-eye has also missed the bull's-eye a thousand times while learning the skill.

Everyone stumbles at one time or another. It's the human condition

This wasn’t just an attack against the Boston Marathon... It was an attack against the American public and our democratic use of the streets. We have used our public roadways for annual parades, protest marches, presidential inaugurations, marathons, and all manner of other events. The roads belong to us, and their use represents an important part of our free and democratic tradition.

Life is a marathon, not a sprint; pace yourself accordingly.

That's the beauty of starting lines: Until you begin a new venture, you never know what awaits you.

Here’s my mantra: ‘Every mile is a gift.’

Too many people have refused to begin running or have quickly dropped out of running programs because they 'have no talent for it.' Ridiculous. Talent has nothing to do with it. The only thing that matters is mental discipline.