A body shouldn't heed what might be. He's got to do with what is.

Knowledge was not meant to be locked behind doors. It breathes best in the open air where all men can inhale its essence.

Books are the perfect Time Machine. By the simple act of opening a book you can, in an instant, be travelling up a jungle river without once being bitten by mosquitoes, or you can almost die of thirst in the desert while holding a cold drink in your hand, or dine in the finest restaurants and never have to worry about paying the bill, or ride the wild country of our western frontier and never worry about losing your scalp to a raiding party.

It is better to have no emotion when it is work. Do what needs to be done, and do it coolly.

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.

Folks who talk about no violence are always the ones who are first to call a policeman and usually they are sure there is one handy.

Revenge could steal a man's life until there was nothing left but emptiness.