It easily seems to the young as if the only milieu with which they are acquainted were representative of the whole world. They can scarcely believe that in another place or another set the views which they dare not avow for fear of being thought utterly perverse would be accepted as the ordinary commonplaces of the age.
Source: The Conquest of Happiness, 1930, chap.9: Fear of public opinion
More info.:http://russell-j.com/beginner/HA19-010.HTM