Boston Celtics legend Paul Pierce does not shy away from giving his opinion. Although that’s not how he earned his nickname “The Truth,” it fits his personality.

Pierce has said before he believes in order for a team to win a title in the NBA, they must have one key ingredient: an elite wing as the team’s best player. Though he admits there have been few exceptions, it’s hard to argue his point, given the list of teams that have fit his mold.

When discussing the state of the Boston Celtics and Kyrie Irving on ESPN‘s NBA Countdown, Pierce raised the point again.

I think we’ve already [seen] that in Cleveland. You know, where he didn’t have to be the main guy. You know, I truly believe where, if you create a system where Kyrie doesn’t have to be the leading scorer, he can be that one-B-guy, you know, that’s a system we saw him be very successful in. Now, all the pressure’s on him, all the defense, all the scouting report is just all about Kyrie. You know, that’s tough on a small guard to lead a team to a team to a championship. So, if you can put him in a system to where, maybe, you have that other player who and be that scorer. I think he’s a one-B on a championship team. [Because] he’s already shown that. So, maybe if one of these other Celtics can emerge as a one-A, à la Jayson Tatum…

This is not the first time Pierce has stated Tatum needs to become Boston’s best player. In January, Pierce expressed on WEEI the same sentiment he shared on Sunday.

He has that ability to be a superstar and [it’s] my personal opinion you need a great wingman to be your best player to win a championship. If you think about all the championship teams, it’s tough for your point guard to be the best player. Rare occasions. Isiah [Thomas], Magic [Johnson], Steph Curry, Chauncey Billups, and Tony Parker when he won MVP. Steph was their best player in the finals, but he didn’t win MVP in none of those finals. It was all the wing guys [Andre] Iguodala and [Kevin] Durant. Throughout the years: Kawhi [Leonard], LeBron [James], [Dwyane] Wade, Kobe [Bryant]. … You need that special wing player, that guy who can get his own shot. He has to be that wing player. Look at the last 20 champions. The best player has been, more times than not, that great wing player.

As Pierce made his case for Tatum while critiquing Irving on Sunday, Chauncey Billups, his fellow ESPN analyst, questioned Pierce on the matter, given Billups had won a ring in Detroit and was the teams best player. He stated to his co-host, “So Kyrie’s not good enough to be the best player on a championship team is basically what you’re saying.” To which Pierce replied:

But my belief, Chauncey, always, you know this: I don’t believe your point guard, unless you’re an all-time point guard, à la Magic, à la Isiah, Steph Curry. You’re a rare case [Chauncey]. You’re a rare case. You and Tony Parker. Outside of that, Magic Isiah, Steph Curry, all-time guards. I don’t think [a point guard] needs to be your best—can be your best player to win a championship.

Pierce then admitted Irving is a superstar and that team’s need superstar talent to win. However, held true to his opinion, reiterating only in unique circumstances do teams win when their point guard is their best player.