Tao Te Ching 50

Men come forth and live; they enter again and die.

Of every ten three are ministers of life to themselves; and three are ministers of death.

There are also three in every ten whose aim is to live, but whose movements tend to the land or place of death. And for what reason? Because of their excessive endeavors to perpetuate life.

But I have heard that he who is skillful in managing the life entrusted to him for a time travels on the land without having to shun rhinoceros or tiger, and enters a host without having to avoid buff coat or sharp weapon. 

The rhinoceros finds no place in him into which to thrust its horn, nor the tiger a place in which to fix its claws, nor the weapon a place to admit its point. And for what reason? Because there is in him no place of death.