If you've got a talent, protect it.
If you're going through hell, keep going.
Be gentle to all and stern with yourself.
Always desire to learn something useful.
If you think you can do it, you can.
The dog that trots about finds a bone.
What you do today can improve all your tomorrows.
To be a good loser is to learn how to win.
Problems are not stop signs, they are guidelines.
Who seeks shall find.
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.