To prove the principle means to demonstrate or show that a certain concept or idea is true or valid. It involves providing evidence or examples to support the principle or theory being discussed. Full definition
Investing for the next stock market crash isn't rocket science, but there are several proven principles for investing success to consider. (definefinancial.com)
By proving those principles systematically, I was better prepared to struggle with the inevitable technical problems. (kavlifoundation.org)
As any other sport, bodybuilding is optimized when the athlete is abiding proven principles. (fitnessandpower.com)