Meet Jia Sarnicola and Zuri Copeland, both just four years old, but already challenging the norms. They might not subscribe to the rules of society or science, but they sure do make their own! But don't try to tell them they're not twins because of it, because their response is simply, "You don't know anything."

From a spiritual standpoint, these youngsters might just be onto something. They believe they share a bond that runs deeper than friendship or blood. "We are twins because we have the same birthday and the same soul," says Jia, as she confidently explains to anyone who challenges their twin status.

Now, you might be wondering, can they really be considered twins? Well, according to a theory put forth by the ancient philosopher Plato nearly 2,500 years ago, they might be. Plato believed that humans initially had two sets of body parts, essentially two humans combined into two attached bodies sharing a soul.

In fear of these perfect and powerful beings rising against him, Zeus split them in half, forcing the separated halves to search for each other for eternity. So, maybe, just maybe, Jia and Zuri share a soul.

But regardless of the theory, Jia and Zuri proudly proclaim their twinhood. "They will tell you that they are twins, and they have a long list of reasons why to back it up," Jia's mom, Ashley Sarnicola, proudly says.

These vivacious young girls not only have big hearts but also big opinions. They adore wearing matching outfits, singing, and dancing together. "I think that’s one of the nice things about growing up in a multicultural, melting pot city," Ashley adds.

Zuri's mom, Valencia Copeland, shares, "You know, you’re happy for a few seconds and then you become sad because they have to grow up – and then society takes over."

Zuri's older sister, Victoria Williams, shared their unique bond on social media. Since then, the post has garnered more than 68,000 likes and continues to inspire people all around the world.

Watch this video about these best friends here:

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(via Good Morning America, CBS Evening News)