Hopefully, when authorities capture the person or people responsible, we'll learn a motive for Monday's Boston Marathon bombings.

No, we don't expect it to make sense.

Only a cowardly, cruel and thoroughly warped mind could hatch such a crime.

Still, it's natural to ask "Why?" after an attack like this, to try to make some sense of it.

Authorities Wednesday said they have video of a man dropping a duffel bag containing the second homemade bomb and walking away. They haven't identified him yet, but we have no doubt they will.

As one official said after the attack, law enforcement officers are prepared to go to the ends of the earth to capture him.

We have to wonder if he thought he was making some kind of political statement or was trying to call attention to a perceived injustice.

In the end, though, it might be he just wanted to kill or maim as many people as possible.

That, of course, is what he'll be remembered for.

We seem to recall Timothy McVeigh believed he had some sort of justification for the Oklahoma City bombing in the 1990s.

But what we remember is a loser who killed more than 100 men, women and children, was captured, strapped to a table and put to death for his crime.

McVeigh's "reasoning" still lives somewhere on the Internet, but it's not worth the effort to search for it.

Authorities rightly have labeled the Boston bombings an act of terrorism. By definition, that's what it is -- whether it was committed by a foreign organization or a home-grown "lone wolf."

But really, the perpetrator or perpetrators failed in that regard.

The people of Boston don't seem terrorized.

Hurt, grief-stricken and angry -- but not terrorized.

Terrorized people run from danger. They don't race toward an explosion -- as emergency workers, spectators and marathon participants alike did -- to help the victims.

They huddle inside in fear -- they don't open their homes and businesses to strangers affected by the emergency.

Over and over this week we've heard residents say Boston was a "strong" city, and it won't be the same after this.

It will be stronger.

Like the rest of the country, we pray for the victims -- those killed, maimed and their families.

The twin blasts destroyed lives and limbs, and the healing process will be long.

The city of Boston's spirit, however, appears unscathed by a so-far anonymous coward.