Phil Robertson, the patriarch of the family on "Duck Dynasty" is planning on walking away from the show soon, but he doesn't think his departure would signal the end of its run.

"Parade" magazine recently asked Phil how long he wants to continue being involved with the show and he said, quote, "Not long, but I think it'll go on without me."

Phil didn't elaborate . . . but we can assume that he'll still be heavily involved on Season Four, which premieres on August 14th. (Since most, if not all, of it has probably already filmed.)

Phil's son WILLIE says the show has brought the family "a whole lot closer." He adds, quote, "It's probably the opposite of most reality shows. And nobody gets a big head because we're doing it all together."

Willie, who's the CEO of the family's duck call company, Duck Commander, says they thought the show would be good for business . . . and it has been. They expect to sell more than 750,000 duck calls this year, which is up from 60,000 in 2011.

Phil just released a new book, 'Happy Happy Happy', has numerous speaking engagements. If he walked away from a professional football career because it would interfere with his hunting, no doubt he would walk from the show if he felt it was cutting into duck season.