The employee also, helpfully, lists suggestions for how Google can improve gender diversity - because he's all for it - by considering the personality differences between men and women.
The crux of Damore's argument was that biological differences between men and women are the cause of the gender gap at Google and the broader tech industry.
They argue that women are more people-oriented, anxiety-prone and less ambitious, and conclude that the workplace should not be made more comfortable for them because male employees would suffer.
Google CEO Sunder Pichai has reportedly cut his vacation short to deal with the crisis over an anti-diversity "manifesto" that went viral inside the company and infuriated thousands of employees.
Google's unnamed employee, who expressed his opinions also outlined that women "generally prefer jobs in social or artistic areas" whilst "more men like coding". "Otherwise "Diversity and Inclusion" which is essentially a pipeline from Women's and African Studies into Google, will ruin the company".
To that, Pichai wrote, "To suggest a group of our colleagues have traits that make them less biologically suited to that work is offensive and not OK". The article was posted on an internal discussion board in the company but was published in full by tech website Gizmodo.
Brown wrote that we remain unequivocal in the belief diversity and inclusion remains critical to the company's success, and we will continue standing for that, and have a commitment to it over the long haul.
As Brown noted in her letter to Google staffers, "Changing a culture is hard, and it's often uncomfortable".
Google, a company that past year was accused of systemic pay inequality for women by the U.S. Department of Labor, issued a response to the memo. It criticizes Google for offering mentoring and other programs for women and minorities and for what it calls "special treatment" of job candidates who are women or underrepresented minorities.
Diversity and inclusion are key parts of the company's culture, according to Brown, who referenced another statement released over the weekend by engineering vice president Ari Balogh condemning the controversial memo.