Be gentle to all and stern with yourself.
If you think you can do it, you can.
After a storm comes a calm.
Do not weep do not wax indignant. Understand.
It's always too early to quit.
What you do today can improve all your tomorrows.
You never know what motivates you.
Quality is not an act, it is a habit.
Go for it now. The future is promised to no one.
Problems are not stop signs, they are guidelines.
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.