A year and a half in prison proved that point.
If nothing else, the 80's proved that no amount of money can create a golden age.
Only the experiment, of course, would prove that one way or the other.
He also proved that mime and acting are of great value.
And proved, once again, that the truth of history is always concrete.
His strong, capable sister, Katie, proved that theory wrong every day.
Only the results of further tests by pathologists will prove that one way or another.
All of this fiddling around only further proves that point.
An Horse proves that two's company, and brings a crowd!
Thus, proving that the country was not yet fully independent economically.