So many things crossed our minds when we heard the news of bombings in Boston that killed at least three people and left scores of others injured.

We were powerfully struck, of course, by such a callous act of violence unfolding in Boston, the cradle of American liberty. There was tragic irony, too, in seeing such violence at a marathon. We were told, after the Sept. 11, 2001, terrorist attacks, that the fight against terror would be a marathon, not a sprint. More than a decade later, an actual, not a metaphorical, marathon fell victim to a brutal misdeed.

We don’t know at this point who is responsible for Monday’s bombing, but we have confidence that those responsible will be caught.

We hope and pray for swift justice for the person or persons who did this, but we know no punishment can restore the lives lost in Monday’s bombing, or make whole the many people who were injured. It’s hard to live in a world in which a runner ends a race by losing the very legs propelling him to the finish line.

The response to Monday’s bombing also reminded us of how much good there is in the world. The many kindnesses and acts of generosity and courage affirmed that the evildoers among us are a distinct minority.

We will, by the quality of our hearts and the strength of our numbers, prevail over those who would do this country harm.

Seeing a beautiful day in Boston gone suddenly, horribly wrong, we thought of Sept. 11, 2001, another beautiful day marred by malevolence.

Terrorists want to take that beauty away, to make us look to the ground in fear, and not toward the sky and the boundless reaches of human possibility.

Today, we affirm the promise of what is best in us, which is stronger than any bomb, more resilient than any act of violence.