I’m a great believer in solving hard problems by using a checklist. You need to get all the likely and unlikely answers before you; otherwise it’s easy to miss something important.

The world is a graveyard, and we are its ghosts.

A man is the sum of his misfortunes. One day you'd think misfortune would get tired but then time is your misfortune.

We don't inherit the earth from our ancestors; we borrow it from our children—this is especially true in forestry.