What is today accepted as truth will tomorrow prove to be only amusing.

I have told many, yet when I go down that last trail, I know there will be a thousand stories hammering at my skull, demanding to be told.

When I die, remember that what you knew of me is with you always. What is buried is only the shell of what was. Do not regret the shell, but remember the man. Remember the father.

Mountains should not be judged by altitude.

... the mind must be prepared for knowledge as one prepares a field for planting, and a discovery made too soon is no better than a discovery not made at all.

What a man wants to do he generally can do, if he wants to badly enough.

The wind was cold off the mountains and I was a naked man with enemies behind me, and nothing before me but hope.