Problems are not stop signs, they are guidelines.
The dog that trots about finds a bone.
I can, therefore I am.
Never complain and never explain.
If you're going through hell, keep going.
You never know what motivates you.
The secret of getting ahead is getting started.
To be a good loser is to learn how to win.
Without hard work, nothing grows but weeds.
Be kind whenever possible. It is always possible.
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.