我们从这样的假设开始：任何学科都可以以某种智力上诚实的形式有效地教给处于任何发展阶段的任何孩子。
We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.
The best brands are built on trust, transparency, and timeless values.
质量始于农场，我们的任务是确保它永不衰退。