“In this way the effect will be seen in the person, by the observation of different cases; in the family; in the neighbourhood; in the state; and in the kingdom. How do I know that this effect is sure to hold thus all under the sky? By this method of observation. He who has in himself abundantly the attributes of the Tao is like an infant. Poisonous insects will not sting him; fierce beasts will not seize him; birds of prey will not strike him. The infant's bones are weak and its sinews soft, but yet its grasp is firm. It knows not yet the union of male and female, and yet its virile member may be excited -- showing the perfection of its physical essence. All day long it will cry without its throat becoming hoarse -- showing the harmony in its constitution.”
- Tao Te Ching — Chapter 41 (James Legge)