Do you want to have a long life? Well, you will need to have wisdom. You will need to think about your own mind. You will need to work on it. You should start doing this now. You must make your mind smooth. You must make your mind steady. You must make your mind resilient. If your mind is not smooth, you will fail to see danger. If your mind is not steady, you will be easily angered and upset and arrogant and proud. If your mind is not resilient, you will be unclear and easily startled.
Dudley Patterson, Apache Elder, from the book Wisdom Sits in Places by Keith Basso