It is nurtured by the daughters and sons of early immigrants.
She is 30, a native American daughter of immigrants and living in Manhattan.
"You come from a background where there were no books, the son and daughter of immigrants," he says.
"I am the youngest daughter of immigrants who came to this country with very little money," she said.
Her own experience as the daughter of immigrants, however, served her little.
His mother was the daughter of immigrants from Austria and Germany.
Her mother, a music teacher, was the daughter of Irish immigrants.
That person was the dutiful daughter of Chinese immigrants, who expected her to get a practical job.
His mother was Jewish, the daughter of immigrants from Russia.
Many were daughters of immigrants, the first in their families to attend college.