It's always too early to quit.
Problems are not stop signs, they are guidelines.
Be kind whenever possible. It is always possible.
Who seeks shall find.
If you've got a talent, protect it.
The secret of getting ahead is getting started.
Do not weep do not wax indignant. Understand.
What you do today can improve all your tomorrows.
Without hard work, nothing grows but weeds.
Be gentle to all and stern with yourself.
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.