P'u is one of the most important principles of Taoism. It is referred to as the uncarved block.

The basic principle of P'u, is that things in their natural, simplicity, contain their own great power, which is easily lost when that simplicity is tainted.

This applies to things in nature, alive and otherwise, and to people as well.
It is important to understand that being simple minded doesn't neccesarily mean stupid, or foolish, yet calm, reflective, and understanding.