Great Thoughts from Bonhoeffer's mother

In a new book on Bonhoeffer Ferdinand Schlingensiepen says of Paula, Bonhoeffer's mother, :
"...the mother spent a great deal of time with her eight children.  She was a trained teacher and gave the older five children their first schooling herself, along with some of the neighbour' children.  In her view, if at all possible,one should not turn one's children over to strangers during their early years, which are so important for the development of imagination and character."