“One cannot understand an economy without researching the activities of all its participants, and the process through which they are born, taught, and defended by their families. To try to do so is, quite simply, stupid. That Nobel laureates and entire economic departments pretend to, and that policies in great countries is sometimes made on such pretenses makes it no less stupid. Once that reality is faced, the choice is simple. One may do stupid work on men and individuals only, or do the job right and study women, households, and classes too.”

“The enemy isn't men, or women, it's bloody stupid people and no one has the right to be stupid.”

“One of the major difficulties Trillian experienced in her relationship with Zaphod was learning to distinguish between him pretending to be stupid just to get people off their guard, pretending to be stupid because he couldn't be bothered to think and wanted someone else to do it for him, pretending to be outrageously stupid to hide the fact that he actually didn’t understand what was going on, and really being genuinely stupid. He was renowned for being amazingly clever and quite clearly was so—but not all the time, which obviously worried him, hence, the act. He preferred people to be puzzled rather than contemptuous.”

“It's not fair, men get to go off and chase around the country and get medals for doing stupid things and women get to sit home and worry.”

“Pilkington, at Mombasa, had produced individuals who were sexually mature at four and full grown at six and a half. A scientific triumph. But socially useless. Six-year-old men and women were too stupid to do even Epsilon work. And the process was an all-or-nothing one; either you failed to modify at all, or else you modified the whole way. They were still trying to find the ideal compromise between adults of twenty and adults of six. So far without success. Mr Foster sighed and shook his head.”

“Anyone who says that women do not have influence in men's decisions makes a vast and stupid mistake.”