Their principal motivation was to keep peace within the family, but the decision also freed each of us to pursue our druthers.

Probably the principal motivation for migration was economic distress in the homeland.

But both network executives said that the principal motivation for forming the group was to save money.

Acquisitiveness or, if you will, greed is their principal motivation.

The principal motivation for this comparison is to help decisions about the allocation of health care resources.

As far as he could tell, money was her principal motivation.

Look, that wasn't a principal motivation on my part.

Originally, his principal motivation was to explain the thermodynamics of radiation.

He later said in an interview with Larry King that his principal motivation was to make money.

That is a principal motivation behind this merger, the executives said at their news conference.