Here are excerpts from this 2018 book:
* The company put off drafting an army of sales and marketing people until much later. Instead, in 1999 and 2000, Google staffed up with—what else?—brainiacs. Larry and Sergey hired software engineers, hardware engineers, network engineers, mathematicians, even neurosurgeons. Just as with every other facet of their company, Page and Brin wanted only the very best. They wanted Ph.D.’s and scientists. Google would become notorious for the rigorous way it interviewed and screened potential hires—and for its exacting selectiveness. For many years, every new employee was personally vetted by Brin and Page themselves, who expected candidates to measure up to their own intellectual standard. “We just hired people like us,” Page said.