To be ignorant of what occurred before you were born is to remain always a child. For what is the worth of human life, unless it is woven into the life of our ancestors by the records of history?
Madness string 44129
That's why it takes two to cover the whole simplification! Just like the universe is just reduced to energy and language, everything can be blamed up nature or nurture, chemistry or society. The other 'cheap' summary is 'blame the parents', which is basically the same thing but badly written.