Is relentless hard work more important than raw brilliance for success?

Do you agree with this neurosurgeon online?

He said the biggest factor in whether you make it in building your career is how dedicated and stubbornly hard working you are.

He said he had never met a guy that worked insanely hard that did not succeed at the goals he set to achieve in life, and I do not know what his religious background is or if he is religious at all, but Solomon said in the book of proverbs, that

“All hard work brings a profit, but mere talk leads only to poverty…”

For example, I know a lawyer who said. “There are a lot of stupid lawyers…”

And I laughed at him, like, “How could you be stupid if you are a lawyer?”

And he said, “You would be surprised how many doors will open for you, if you are willing to work hard.”

Is relentless hard work more important than raw brilliance for success?
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