What you do today can improve all your tomorrows.
You never know what motivates you.
Begin to be now what you will be hereafter.
Do not weep do not wax indignant. Understand.
Always desire to learn something useful.
Never complain and never explain.
Know or listen to those who know.
The wise does at once what the fool does at last.
Well done is better than well said.
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.