The book Love and Its Place in Nature observed that without love，children tend to die And Ashley Montagu，noted British—born anthropologist，went so far as to say：The child who has not been loved is biochemically，physiologically，and psychologically very different from the one who has been loved The former even grows differently from the latter． The Toronto Star reported on a study that reached similar conclusions．It said：“Children raised without being regularly hugged，cared or stroked…have abnormally high levels of stress hormones．”Indeed，physical neglect during infancy“can have serious long—range effects on learning and memory．” These findings emphasize the need for the physical presence of parents．Otherwise，how can strong ties develop between parents and child?But sorry to say，even in affluent parts of the world，the tendency now is to try to supply a child’s needs apart from his or her parents．Children are sent away to school，sent away to work，sent away to summer camp，and given money and sent away to places of recreation．Thrust out of the family nucleus，circling in orbit at a distance，as it were，rail lions of children naturally come to feel—if only subconsciously--neglected，unwanted，and un loved，surrounded by a hostile world of grownups．Such a prevailing feeling among children may be one reason why there are so many street children．Typical is young Micha，who said：“No one wanted me anymore”A nine—year—old boy similarly complained：“1 would rather be our dog．” Child neglect is a form. of mistreatment and it can lead to more sinister forms of mistreatment such as the physical mistreatment and sexual abuse of children． Regardless of the form. mistreatment takes，it sends children the message that they are unloved and unwanted According to the German newspaper Die Welt．“more and more children are growing up to be social cripples．”It adds：“Children lack the warmth of the nest．The emotional bonding between children and parents is becoming weaker，or it is never established in the first place Such children feel neglected，and their desire for security goes unfulfilled” Children who are denied their right to be wanted and loved may become bitter，taking out their frustrations off those who have neglected them or possibly Otlsociety as a whole Fully a decade ago，a Canadian taskforce report signaled the need for immediate action lest a whole generation“who think society doesn’t care about them”be lost． Unloved and unwanted youngsters may be tempted to run away from home to escape their problems，only to find bigger ones in cities plagued with crime，drugs，and immorality．In fact，police have estimated that 20，000 runaways under 1 6 were living in one U．S．metropolitan area alone They were described as“the products of broken homes and brutality．often inflicted by alcoholic ordrug。addicted parents．They take to the streets，use their bodies for survival and then，beaten by pimps and bereft of self-esteem，live in fear of reprisal if they attempt to escape the racket．”Sad to say，despite honest efforts to change this deplorable situation，it still exists． Children growing up in the circumstances described above develop into unbalanced adults，of ten being unable to rear children of their own properly．Being unwanted and unloved themselves，they later produce more of their own kind The main idea of the passage is that___________．