The number "seven" has a special meaning in Biblical sense: it symbolizes human perfectibility.

Perhaps because it questions human perfectibility.

"One doesn't have to believe in human perfectibility to insist that those who want a chance at an education ought to be given it," he said.

We had been brought up to believe in human innocence and even in human perfectibility.

The belief in human perfectibility had not prepared us for Hitler and Stalin.

Precisely 200 years ago, Thomas Malthus, the first great modern prophet against progress, exploded human perfectibility as an impossible dream.

Unlike John and Helen she had no faith in human perfectibility, either female or male.

The idea of human perfectibility had, however, become more comprehensive.

He persuaded me and many of my contemporaries that original sin provides a far stronger foundation for freedom and self-government than illusions about human perfectibility.

They share a wishful vision of human perfectibility dressed up as an idea of justice.