Be gentle to all and stern with yourself.
Always desire to learn something useful.
To know oneself, one should assert oneself.
Wherever you are - be all there.
Never complain and never explain.
If you're going through hell, keep going.
The most effective way to do it, is to do it.
Know or listen to those who know.
If you've got a talent, protect it.
Be thine own palace, or the world's thy jail.
In those early years in New York when I was a stranger in a big city, it was the companionship and later friendship which I was offered in the Linnean Society that was the most important thing in my life.