Justin Bieber breaks silence on tour cancelation in letter to fans: 'I want my career to be sustainable'

Is it too late for Justin Bieber to say he's sorry? Not according to a lengthy note the singer wrote to fans on Wednesday night (Aug. 2), in which he attempted to explain why he unexpectedly pulled the plug on the final 14 dates on his global Purpose World Tour.

"Learning and growing hasn't always been easy but knowing I'm not alone has kept me going," he wrote in the letter. "I want you all to know this tour has been unbelievable and has taught me so much about myself... I am reminded of how blessed I am to have a voice in this world. I've learned the more you appreciate your calling the more you want to protect your calling."

Crucially, Bieber alluded to why he canceled the dates, though he didn't give a specific reason. "Me taking this time right now is me saying I want to be SUSTAINABLE... I want my career to be sustainable, but I also want my mind heart and soul to be sustainable."

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After 150 dates around the world, Bieber, 23, put the brakes on the tour on July 24, with promoter AEG Presents explaining, "Due to unforeseen circumstances, Justin Bieber will cancel the remainder of the Purpose World Tour concerts. Justin loves his fans and hates to disappoint them. He thanks his fans for the incredible experience of the Purpose World Tour over last 18 months. He is grateful and honored to have shared that experience with his cast and crew for over 150 successful shows across 6 continents during this run. However, after careful consideration he has decided he will not be performing any further dates."

The move set off rampant speculation about why Bieber would call an end to the wildly successful outing, which was winding down with mostly stadium dates slated to feature opening sets from Vic Mensa, Migos and Martin Garrix. In April, Billboard reported that the tour was nearing $200 million in earnings.

Though the "unforeseen circumstances" have not been explained to date, manager Scooter Braun said in an Instagram post that Bieber's "soul and wellbeing" had to come first.