1.   But there have also been powerful motivations of a different kind.

2.   Both parties have powerful motivations to prove that they have not been consumed by impeachment.

3.   Consequently, they have a powerful motivation to maintain and expand their lines of assistance, many black professionals say.

4.   It has been largely fueled by consumer spending, and that means, of course, that companies have a powerful motivation to increase their advertising budgets.

5.   Limiting any such wholesale withdrawals could be a powerful motivation for going public.

6.   One powerful motivation to seek environmental culprits is that they, unlike many of the known risk factors, can perhaps be modified.

7.   One-slip-and-go-home is a powerful motivation to play to win.

8.   Perhaps the most powerful motivation to get NASA on the fast track to Mars is coming from outside the government.

9.   So the Islanders did have powerful motivation for winning their season finale on Sunday, after all.

10.   The scenes from Oklahoma City have provided a powerful motivation for our national leaders to set aside their many differences in working to meet the terrorist challenge.