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Ted Cruz took a jab at Donald Trump's slogan during a special Hannity interview on the campaign stage in South Carolina.

The Texas senator said that while "Make America Great Again" fits neatly on a baseball cap, the country can't be saved without understanding the revolutionary principle at its foundation.

Cruz told Hannity he was more worried than ever that the American Dream is slipping out of reach.

“I wake up every day scared for what kind of world [my] girls are inheriting," Cruz said. "If we keep doing what we’re doing, we’re risking losing the greatest country in the history of the world.”

Hannity asked how Cruz planned to rebuild the weakened labor force and put the country on a more prosperous path. 

Cruz's answer was more philosophical, saying that "cause and effect matter."

"It's easy to say 'Make America Great Again,'" he said. "You can even it put it on a baseball cap. But the question is, do you understand what it was that made America great in the first place?"

He said that the key to rebuilding the country lies in the understanding that the people's rights don't come from government, but, as the Declaration of Independence says, "that they are endowed by their Creator."

That elicited strong applause from the audience.

Cruz went on to say that with the passing of Justice Antonin Scalia, every one of our constitutional rights are in jeopardy.

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