1.   No-one can doubt its power to evoke the imagination of millions upon millions of people through the ages and today.

2.   Anyone who doubts the power of Internet technology should consider that it has now brought the very emblems of American capitalism to heel.

3.   For the legion of citizens who still doubt the power of mathematical formalizationin economics, Deirdre McCloskey of the University of Iowa has prepared a feast.

4.   If you doubt the information-gathering power of these networks, just visit their sites and see what they promise to deliver to advertisers.

5.   No longer, however, is it reasonable to doubt the power of good economic housekeeping to influence events.

6.   There was a point at the depths when she even doubted the higher power.

7.   Yet she also has her doubts, and a diva who doubts her powers faces the ultimate identity crisis.