My favorite theory about Smith at the moment was that he was some kind of spiritual vampire.

A. My favorite theory is that the structure of a bird song is determined by what will carry best in its home environment.

The favorite theory is the simplest, and the most logical.

My favorite theory is that they are hiding from someone.

Quite the contrary, as I learned at a dinner the other evening when guests were asked by turn for their favorite theories.

But everyone seems to have a favorite theory.

"The most important thing is to make people feel comfortable," he said, warming to his favorite theory of the good hotel.

Not surprisingly, the favorite theories from the previous era are now on the table for serious revision.

But it was enough to confirm an old and favorite theory.

His favorite theory was that the Atlantic ice-packs were not safe enough for heavy traffic further to the south.