We need to get to equality in the home. We cannot have equality in the office until we have equality in the home. It can’t happen. - Sheryl Sandberg

"When a man helps a colleague, the recipient feels indebted to him and is highly likely to return the favor. But when a woman helps out, the feeling of indebtedness is weaker. (...) Professor Flynn calls this the "gender discount" problem, and it means that women are paying a professional penalty for their pressumed desire to be communal."

An internal report at Hewlett-Packard revealed that women only apply for open jobs if they think they meet 100 percent of the criteria listed. Men apply if they think they meet 60 percent of the requirements.

But instead of blaming women for not negotiating more, we need to recognize that women often have good cause to be reluctant to advocate for their own interests because doing so can easily backfire.