Never complain and never explain.
Well done is better than well said.
The most effective way to do it, is to do it.
Problems are not stop signs, they are guidelines.
If you've got a talent, protect it.
Expect problems and eat them for breakfast.
The wise does at once what the fool does at last.
If you think you can do it, you can.
It's always too early to quit.
Quality is not an act, it is a habit.
Ethical religion can be real only to those who are engaged in ceaseless efforts at moral improvement. By moving upward we acquire faith in an upward movement, without limit.
The office of the public teacher is an unenviable and thankless one.