Marshall's advice proves sound when Barney wins the game and the gang gets the money.

Why such devotion to a man whose prewar advice proved so misguided?

But the cautionary advice once given to one musician might prove helpful to others.

That advice has proved particularly helpful for Mannelly, whose target is small.

That advice proved just as helpful for this book and will guide me through any books I do in the future.

Johnson does, however, acknowledge that his father's advice proved to be sensible.

This advice proved to be very useful to the American cause.

For instance, advice may avoid a loss of market share and thus prove valuable.

I have not noticed that his advice has proved valueless to the king.

"Perhaps his advice will prove no worse than some."