11.  Drabinsky and his Livent company are definitely a positive force in musical theater.

12.  For consumers, unionization may be a positive force if doctors use collective bargaining to negotiate for improved patient services rather than merely for higher physician pay.

13.  For the most part, experts and veteran prison administrators see the Islamic influence behind bars as a positive force.

14.  He is a positive force on and off the floor.

15.  He taught us to overcome fear, to overcome hatred and to turn the evil of the oppressor into a positive force in our lives.

16.  I have to be a positive force on the team and just continue to work hard.

17.  If these two should remember another friend in need and go together to help that friend, that positive force will multiply.

18.  In fact, play is a positive force from infancy through adulthood, taking different forms as a child grows.

19.  Like Epstein, he finds the Internet a positive force that, among other benefits, will become the most efficient means to sell books.

20.  Ninety percent of what Kemp has done for the franchise and Seattle has been a positive force.