It's always too early to quit.
Wherever you are - be all there.
The secret of getting ahead is getting started.
I can, therefore I am.
Problems are not stop signs, they are guidelines.
Expect problems and eat them for breakfast.
If you think you can do it, you can.
Never complain and never explain.
By failing to prepare, you are preparing to fail.
To know oneself, one should assert oneself.
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.