Tao Te Ching – Chapter 76

Men are born soft and supple;
dead, they are stiff and hard.
Plats are born tender and pliant;
dead, they are brittle and dry.

Thus whoever is stiff and inflexible
is a disciple of death.
Whoever is soft and yielding
is a disciple of life.

The hard and stiff will be broken.
The soft and supple will prevail.