Over the course of her legendary career, Serena Williams has proven to not only be the GOAT female tennis player, but the most-winning tennis player, period.

And according to Nike, she's the best athlete of all time.

That being said, Williams didn't get to where she is without breaking down barriers.

In a powerful open letter in Porter Magazine, which was reprinted by The Guardian, Williams tackles some of the obstacles still holding women back while imploring them to "continue to dream big."

"So when the subject of equal pay comes up, it frustrates me because I know firsthand that I, like you, have done the same work and made the same sacrifices as our male counterparts," Williams passionately wrote in part of her open letter, touching on gender equality. "I would never want my daughter to be paid less than my son for the same work. Nor would you."

Williams added, "As we know, women have to break down many barriers on the road to success. One of those barriers is the way we are constantly reminded we are not men, as if it is a flaw. People call me one of the 'world’s greatest female athletes.' Do they say LeBron is one of the world’s best male athletes? Is Tiger? [Roger] Federer? Why not? They are certainly not female. We should never let this go unchallenged. We should always be judged by our achievements, not by our gender."

Closing her thought-provoking letter, Serena says that she hopes her story and others "will inspire all young women out there to push for greatness and follow their dreams with steadfast resilience." 

She added that women "must continue to dream big" to "empower the next generation of women to be just as bold in their pursuits."

Spoken like a true, inspirational legend — on and off the court. She nailed it and her fans were fully there for the tennis GOAT's point of view.

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