His critics should read this book

Harvard chief's 'sexism' apology
The Times
February 25, 2005
http://www.theaustralian.news.com.au/common/story_page/0,5744,12360847%255E2703,00.html
NEW YORK: Harvard University president Lawrence Summers appears to have saved his job after apologising for politically incorrect remarks about differences between men and women.

Dr Summers, who was Treasury secretary in the Clinton administration, escaped a confidence vote yesterday at the second faculty meeting since his comments about women's ability in maths and science.
"I am determined to set a different tone," Dr Summers said. "I pledge to you that I will seek to listen more, and more carefully, and to temper my words and actions in ways that convey respect and help us work together more harmoniously."
Dr Summers had suggested that innate differences between the sexes may account for the lack of female professors in maths and science.