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Top 25 D.F. Swaab Quotes (2025 Update)

D.F. Swaab Quote: “Altering the course of rivers and moving mountains is easy. Changing someone’s character is impossible. Chinese saying.”

1. “Altering the course of rivers and moving mountains is easy. Changing someone’s character is impossible. Chinese saying.”

D.F. Swaab Quote: “No matter what country he fights for, a wounded soldier on a battlefield will always call for his mother, not his father.”

2. “No matter what country he fights for, a wounded soldier on a battlefield will always call for his mother, not his father.”

D.F. Swaab Quote: “We drink water that once came from rivers. It leaves our bodies as urine, is purified, travels to the sea, evaporates, and then returns to our taps via rain and rivers.”

3. “We drink water that once came from rivers. It leaves our bodies as urine, is purified, travels to the sea, evaporates, and then returns to our taps via rain and rivers.”

D.F. Swaab Quote: “A hereditary defect in the DNA for ADH makes this hormone’s function immediately apparent. People who inherit this condition produce fifteen liters of urine a day. I have followed a family that has had the condition for five generations. It was during my internship in 1968 in Amsterdam’s Binnengasthuis Hospital that I first met them. At that time, the family’s life was largely dominated by urinating and drinking.”

4. “A hereditary defect in the DNA for ADH makes this hormone’s function immediately apparent. People who inherit this condition produce fifteen liters of urine a day. I have followed a family that has had the condition for five generations. It was during my internship in 1968 in Amsterdam’s Binnengasthuis Hospital that I first met them. At that time, the family’s life was largely dominated by urinating and drinking.”

D.F. Swaab Quote: “Whether abuse as a child is a causal factor in the development of pedophilia in adulthood, or whether there’s a genetic factor in such families, still needs to be investigated.”

5. “Whether abuse as a child is a causal factor in the development of pedophilia in adulthood, or whether there’s a genetic factor in such families, still needs to be investigated.”

D.F. Swaab Quote: “The functioning of the prefrontal cortex is inhibited by alcohol, which can lead to sudden, mindless violence after a night out.”

6. “The functioning of the prefrontal cortex is inhibited by alcohol, which can lead to sudden, mindless violence after a night out.”

D.F. Swaab Quote: “When a pregnant woman experiences stress, the brain of a female fetus will become more male and vice versa. This also appears to be an adaptive response. A girl will be able to cope better in later life if she’s robust and competitive, while a boy who isn’t macho is less likely to get into conflict with alpha males in that stressful environment.”

7. “When a pregnant woman experiences stress, the brain of a female fetus will become more male and vice versa. This also appears to be an adaptive response. A girl will be able to cope better in later life if she’s robust and competitive, while a boy who isn’t macho is less likely to get into conflict with alpha males in that stressful environment.”

D.F. Swaab Quote: “Be nice to your kids, they’ll choose your nursing home. Text on a mug my daughter gave me.”

8. “Be nice to your kids, they’ll choose your nursing home. Text on a mug my daughter gave me.”

D.F. Swaab Quote: “A child with BIID cut dolls out of a magazine and then snipped off the leg that he himself didn’t want.”

9. “A child with BIID cut dolls out of a magazine and then snipped off the leg that he himself didn’t want.”

D.F. Swaab Quote: “Men are five times more likely than women to commit a murder. Moreover, men murder a relative or acquaintance only in 20 percent of cases, as opposed to 60 percent of cases for women.”

10. “Men are five times more likely than women to commit a murder. Moreover, men murder a relative or acquaintance only in 20 percent of cases, as opposed to 60 percent of cases for women.”

D.F. Swaab Quote: “Paternal age plays a role in autism, too: The syndrome occurs ten times more frequently in people born to fathers in their fifties than in those whose fathers were in their twenties when they were conceived.”

11. “Paternal age plays a role in autism, too: The syndrome occurs ten times more frequently in people born to fathers in their fifties than in those whose fathers were in their twenties when they were conceived.”

D.F. Swaab Quote: “Some gender-based differences in our behavior emerge so early on that they can only have arisen in the womb. As early as the first day after birth, girl babies prefer to look at faces, while boy babies prefer to look at mechanical moving objects.”

12. “Some gender-based differences in our behavior emerge so early on that they can only have arisen in the womb. As early as the first day after birth, girl babies prefer to look at faces, while boy babies prefer to look at mechanical moving objects.”

D.F. Swaab Quote: “In hospitals in the 1960s, alcohol was routinely administered intravenously to women at risk of giving birth prematurely.”

13. “In hospitals in the 1960s, alcohol was routinely administered intravenously to women at risk of giving birth prematurely.”

D.F. Swaab Quote: “Pre-birth exposure to nicotine or amphetamines also increases the likelihood of lesbian daughters.”

14. “Pre-birth exposure to nicotine or amphetamines also increases the likelihood of lesbian daughters.”

D.F. Swaab Quote: “It is curious that a genetic predisposition for homosexuality should persist in populations over the course of evolution, given that this group reproduces so much less.”

15. “It is curious that a genetic predisposition for homosexuality should persist in populations over the course of evolution, given that this group reproduces so much less.”

D.F. Swaab Quote: “It seems unlikely that premature babies can consciously feel pain before the twenty-ninth or thirtieth week. The pain sensors in the skin and the nerve pathways that convey pain signals are in place as early as the seventh week, enabling the fetus to respond to touch from a needle. But, contrary to the claims of fanatical pro-lifers, that certainly doesn’t constitute proof that the fetus can feel pain.”

16. “It seems unlikely that premature babies can consciously feel pain before the twenty-ninth or thirtieth week. The pain sensors in the skin and the nerve pathways that convey pain signals are in place as early as the seventh week, enabling the fetus to respond to touch from a needle. But, contrary to the claims of fanatical pro-lifers, that certainly doesn’t constitute proof that the fetus can feel pain.”

D.F. Swaab Quote: “The more older brothers a boy has, the greater the chance that he will be homosexual. This is due to a mother’s immune response to male substances produced by boy babies in the womb, a response that becomes stronger with each pregnancy.”

17. “The more older brothers a boy has, the greater the chance that he will be homosexual. This is due to a mother’s immune response to male substances produced by boy babies in the womb, a response that becomes stronger with each pregnancy.”

D.F. Swaab Quote: “EEG measurements in newborns show a difference between the response to touch and the response to the pain of a heel prick only as of thirty-five to thirty-seven weeks.”

18. “EEG measurements in newborns show a difference between the response to touch and the response to the pain of a heel prick only as of thirty-five to thirty-seven weeks.”

D.F. Swaab Quote: “The PFC plays a central role in regulating other brain areas and is responsible, among other things, for the control of our impulses, complex actions, planning, and organization.”

19. “The PFC plays a central role in regulating other brain areas and is responsible, among other things, for the control of our impulses, complex actions, planning, and organization.”

D.F. Swaab Quote: “Our linguistic and cultural environments don’t determine only which brain systems are involved in language processing but also how facial expressions are interpreted and how we scan images and their surroundings. Japanese and New Guineans, for instance, find it difficult to distinguish between a face expressing fear and a face expressing surprise.”

20. “Our linguistic and cultural environments don’t determine only which brain systems are involved in language processing but also how facial expressions are interpreted and how we scan images and their surroundings. Japanese and New Guineans, for instance, find it difficult to distinguish between a face expressing fear and a face expressing surprise.”

D.F. Swaab Quote: “In 2004 Fox News reported that the widow married the man who’d been given her first husband’s heart. Her new husband went on to kill himself in the same way as the heart’s first “owner.” At the age of thirty-nine, Cheryl was widowed for the second time. De Telegraaf didn’t conclude from this that it might not have been easy to live with Cheryl.”

21. “In 2004 Fox News reported that the widow married the man who’d been given her first husband’s heart. Her new husband went on to kill himself in the same way as the heart’s first “owner.” At the age of thirty-nine, Cheryl was widowed for the second time. De Telegraaf didn’t conclude from this that it might not have been easy to live with Cheryl.”

D.F. Swaab Quote: “In addition, you’re more at risk of developing schizophrenia if you were born in the winter or if your mother was exposed to flu during the sixth month of pregnancy.”

22. “In addition, you’re more at risk of developing schizophrenia if you were born in the winter or if your mother was exposed to flu during the sixth month of pregnancy.”

D.F. Swaab Quote: “Another woman with an epileptic focus in the cerebral cortex refused both medication and the option of an operation, as she enjoyed the feeling of orgasm that preceded her epileptic attacks.”

23. “Another woman with an epileptic focus in the cerebral cortex refused both medication and the option of an operation, as she enjoyed the feeling of orgasm that preceded her epileptic attacks.”

D.F. Swaab Quote: “So De Waal might do well to ask God if he could also curb our tendency to take our lead from charismatic alpha males. Not only might this prevent future genocides and cultural revolutions, it might also reduce the likelihood of another disaster caused by corporate greed.”

24. “So De Waal might do well to ask God if he could also curb our tendency to take our lead from charismatic alpha males. Not only might this prevent future genocides and cultural revolutions, it might also reduce the likelihood of another disaster caused by corporate greed.”

D.F. Swaab Quote: “The unborn child’s great sensitivity to melody might also explain why French babies cry with a rising intonation and German babies with a falling intonation, reflecting the different intonation contours of the two languages.”

25. “The unborn child’s great sensitivity to melody might also explain why French babies cry with a rising intonation and German babies with a falling intonation, reflecting the different intonation contours of the two languages.”

D.F. Swaab Quote: “These hormonal extracts, which probably come from Russia, are sometimes still found in gyms, where they are used by bodybuilders who want to increase muscle mass.”

26. “These hormonal extracts, which probably come from Russia, are sometimes still found in gyms, where they are used by bodybuilders who want to increase muscle mass.”

D.F. Swaab Quote: “Take the myth that we use only 10 percent of our brains. You might well be forgiven for thinking this in the case of certain people, but I haven’t the faintest idea what prompted this crazy theory.”

27. “Take the myth that we use only 10 percent of our brains. You might well be forgiven for thinking this in the case of certain people, but I haven’t the faintest idea what prompted this crazy theory.”

D.F. Swaab Quote: “Although tests show no significant difference in the moral choices made by atheists and believers, the Intelligent Design movement claims that moral behavior is unique to man and derives from religion, especially Christianity.”

28. “Although tests show no significant difference in the moral choices made by atheists and believers, the Intelligent Design movement claims that moral behavior is unique to man and derives from religion, especially Christianity.”

D.F. Swaab Quote: “Brain operations have also been performed on homosexual prisoners with a view to reducing their sentences if the treatment proved effective. Naturally, the men all said that it was effective.”

29. “Brain operations have also been performed on homosexual prisoners with a view to reducing their sentences if the treatment proved effective. Naturally, the men all said that it was effective.”

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