The twenty-first century will be spiritual or it will not be.

War puts its questions stupidly, peace mysteriously.

Nothing is harder than to get people to think about what they are going to do.

The great mystery is not that we should have been thrown down here at random between the profusion of matter and that of the stars; it is that from our very prison we should draw, from our own selves, images powerful enough to deny our own nothingness.

Some pictures are in the gallery because they belong to humanity and others because they belong to the United States.

Since 1789 history has had a new perspective, revolution being a successful revolt, and revolt a revolution that has failed.

Be careful -- with quotations, you can damn anything.