Two-time presidential candidate former Rep. Ron Paul (R-TX) had some fatherly advice Monday to give his son, Sen. Rand Paul (R-KY), who he thinks will “probably” run for president: be careful what you wish for.

Asked by CNN’s Jake Tapper whether he thinks his son would pull the trigger on a presidential campaign, Paul said he thought his libertarian-leaning son would make up his own mind.

“I think he probably will. I mean, he’s been on TV hinting that he very well might,” the elder Paul said on “Erin Burnett OutFront.” “I kiddingly say the only advice I give him, he better be very careful. He’s doing well, he might get elected, and that’s a great burden and a major responsibility. But I think he’s doing quite well.”

For his part, Rand Paul said on “Fox News Sunday” that he had thought about launching a presidential bid even though his wife opposes the idea.