Always desire to learn something useful.
The dog that trots about finds a bone.
Quality is not an act, it is a habit.
Never complain and never explain.
Be gentle to all and stern with yourself.
The secret of getting ahead is getting started.
If you think you can do it, you can.
Who seeks shall find.
I can, therefore I am.
If you're going through hell, keep going.
Sound is the vocabulary of nature.
The world changes materially. Science makes advances in technology and understanding. But the world of humanity doesn't change.