Sentence examples for hard prove from inspiring English sources

What's supposed to happen is: You go to college, earn a few degrees, get an introductory job in your field, work hard, prove yourself and eventually, at the midcareer point, climb to the peak of your profession.

"We try harder" proved a famously effective advertising slogan.

Tomorrow I will try harder" proves heartbreakingly ineffective.

It's hard to prove, but also hard to disprove.

Insider trading is hard to spot and harder to prove.

Also hard to prove.

Hard to prove definitively.

Granted, that proposition is hard to prove.

It is also hard to prove.

It was hard to prove her wrong.

That charge is hard to prove.