How we cite our quotes: Citations follow this format: (Chapter.Part.Paragraph)
Quote #4
"Reducing the number of revolutions per minute," Mr. Foster explained. "The surrogate goes round slower; therefore passes through the lung at longer intervals; therefore gives the embryo less oxygen. Nothing like oxygen-shortage for keeping an embryo below par." Again he rubbed his hands.
[…]
"The lower the caste," said Mr. Foster, "the shorter the oxygen." The first organ affected was the brain. After that the skeleton. At seventy per cent of normal oxygen you got dwarfs. At less than seventy eyeless monsters. (1.70-4)
Science is being abused here for purposes of harm; notice that this new world hasn't made smarter men to fill the role of Alphas; it has simply degraded everyone else.
Quote #5
"They'll grow up with what the psychologists used to call an 'instinctive' hatred of books and flowers. Reflexes unalterably conditioned. They'll be safe from books and botany all their lives." The Director turned to his nurses. "Take them away again." (2.26)
"Nature" has no meaning in this new world; Mustapha Mond will later explicitly make the point that there is no such thing as "instinct," or if there is, it is no different from what citizens are programmed to believe.
Quote #6
"These early experimenters," the D.H.C. was saying, "were on the wrong track. They thought that hypnopædia could be made an instrument of intellectual education…"
[…]
"The - Nile - is - the - longest - river - in - Africa - and - the - second - in - length - of - all - the - rivers - of - the - globe…" The words come rushing out. "Although - falling - short - of…"
"Well now, which is the longest river in Africa?"
The eyes are blank. "I don't know."
[…]
"Whereas, if they'd only started on moral education," said the Director, leading the way towards the door. The students followed him, desperately scribbling as they walked and all the way up in the lift. "Moral education, which ought never, in any circumstances, to be rational." (2.54-60)
Science has its limits. It is interesting that science—an entirely rational subject—can be employed to indoctrinate irrational inclinations.