How well does your experience of the sacred in nature enable you to cope more effectively with the problems of mankind when you come back to the city?
Death is not too great a price for a life fully lived.
Take care of each other. Share your energies with the group. No one must feel alone, cut off, for that is when you do not make it.
Hunger, thirst, cold, fatigue, your own physical and mental limitations - you will feel all of these. This teaches you about nature, more than that, you come face to face with yourself
You've climbed the highest mountain in the world. What's left ? It's all downhill from there. You've got to set your sights on something higher than Everest.