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Elon Musk is continuing to speak his mind on the importance of adding more people to the population.
Court documents published Wednesday revealed that the Tesla founder, 51, secretly welcomed twins back in November with Neuralink executive Shivon Zilis, just weeks before he and his former partner Grimes had a baby girl via surrogate in December. He is now a father of 10.
On Thursday, Musk seemingly alluded to the baby news in a tweet, writing, "Doing my best to help the underpopulation crisis. A collapsing birth rate is the biggest danger civilization faces by far."
Cannon, 41, who is welcoming at least his eighth child this year, then chimed in, telling Musk, "Right there with you my Brother!"
Musk replied to Cannon's tweet Friday morning to congratulate the rapper on his growing family.
"Congrats on your family! We must expand scope & scale of consciousness for civilization to flourish & understand nature of Universe," the CEO wrote. "Consciousness resides most strongly in humans, therefore we need more people!"
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Congrats on your family!
We must expand scope & scale of consciousness for civilization to flourish & understand nature of Universe.
Consciousness resides most strongly in humans, therefore we need more people!
RELATED: Nick Cannon Tells Elon Musk 'I'm Right There with You' After Billionaire Privately Welcomed Twins
According to the court documents, the twins were born in Austin, Texas. The papers reveal that in April, Musk and Shivon Zilis -- who is the project director at his Neuralink company -- asked a Texan county court to change their babies' names so they would "have their father's last name and contain their mother's last name as part of their middle name."
The twins' sexes were not made public and their names were redacted from the documents.
An Austin judge granted their request in May, per Insider.
A representative for Musk did not respond to PEOPLE's request for comment. Zilis also did not respond.
The twins' arrival came before Musk and Grimes had daughter Exa Dark Sideræl, who they've nicknamed Y, in December. She revealed the birth in the April 2022 cover story for Vanity Fair. They also share 2-year-old son X Æ A-12. The two broke up in September 2021.
RELATED VIDEO: Elon Musk Had Twins Last Year with Exec Shivon Zilis Just Weeks Before His & Grimes' Baby Was Born
Musk also shares 18-year-old twins Vivian Jenna Wilson and Griffin, along with triplets Kai, Damian and Sax, who were born in 2006, with his first wife, Justine Wilson. The two had another son, Nevada, who died at 10 weeks.
As for Cannon, he is dad to 11-year-old twins Monroe and Moroccan with ex-wife Mariah Carey, 5-year-old Golden "Sagon" and 18-months-old Powerful Queen with Brittany Bell, and 1-year-old twins Zion Mixolydian and Zillion Heir with Abby De La Rosa.
Cannon is also father to a child with Alyssa Scott, son Zen, who died in December 2021 after being diagnosed with brain cancer. In January, Cannon revealed he's expecting his eighth child with model Bre Tiesi this year. He then confirmed last month that he's having even more babies in 2022 and joked, "the stork is on the way."
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