That statement is from Alan Kay. So is this one:
"For me, the key is education. And in my mind the patron saint of how to teach kids is Maria Montessori. A hundred years ago, Montessori understood that children always are trying to learn about their environment, and so the best way to help them was to give them carefully organized, rich environments, where the toys and the play have 20th-century side effects. In my opinion, this is one of the great ideas in the history of education. Even today, most of the best cognitive science about education harks back to Montessori's original insights."
To read the whole article about Alan Kay's work at Xerox PARC and the Dynabook, go here.