The polarization of Americans on this issue results from some pretty deep differences.

Of much greater significance, however, are the deep philosophical differences between them.

That's not to say that the election didn't expose deep differences between the parties.

"People obviously have deep differences, even hatred - but they don't want to go back to violence."

These deep differences became evident last month, in perhaps the first major signal of trouble.

Her presence had only brought into the open a deep and basic difference between the two factions.

None of that, however, can mask their deep differences on international policy.

The deep cultural differences between north and south Europe should not be underestimated.

There were deep differences over religion and the schooling of the children.

But the deep differences come through only when one hears the voices in the discussion.