It has sought to prove motive, but I submit that that is just what it has not been able to do.

I think the state may have a difficult time proving motive or intent.

Poirot said slowly, shaking his head: "You have still to prove motive."

GT had been very canny about omitting such details-but again, he could not prove prejudicial motive.

But until we can prove motive, there's not very much to go upon.

Still, a Federal judge ruled that Mr. Hicks failed to prove racial motive.

Another stumbling block is proving motive.

We can even prove motive.

First, we have not been able to prove motive, and second, his surprise when the body was found in the cask appears to have been genuine.

Reviewing the case as a whole, the first point which would strike any disinterested observer was the complete failure of the prosecution to prove motive.