Since those decades, he wrote in an essay, the sexual revolution of the 1970's had liberated biographers from "old shibboleths and inhibitions."

For some, it was the opportunity to revive old shibboleths about a global "them" versus "us."

But outside the presidential retreat, analysts said, the talks also revived old shibboleths and emotions that could be difficult to contain.

The 20th-century's old shibboleths, at any rate, make less sense every year.

Nationalism may fill the gap left by the crumbling of old shibboleths of Arab and Islamic unity.

And in seeking them, some of the old shibboleths fell, but to my amazement they did not break.

We've come a long way in sexual enlightenment, the equality of women and men, got rid of the old shibboleths.

The blasphemy was also an attempt to cancel the clinging relics of the past and to achieve an independent identity, free of old shibboleths.

They are afraid there might be some truth in the old shibboleths.

Today's challenge goes well beyond the old shibboleths of level playing fields, competitiveness and protectionism.