Problems are not stop signs, they are guidelines.
Who seeks shall find.
Never complain and never explain.
It's always too early to quit.
I can, therefore I am.
Without hard work, nothing grows but weeds.
Be thine own palace, or the world's thy jail.
Be kind whenever possible. It is always possible.
To know oneself, one should assert oneself.
Always desire to learn something useful.
To create the power of competence without creating a corresponding direction to guide the use of that power is bad education.