Things do not happen. Things are made to happen.
It's always too early to quit.
To know oneself, one should assert oneself.
Quality is not an act, it is a habit.
Only the educated are free.
If you're going through hell, keep going.
Be gentle to all and stern with yourself.
Problems are not stop signs, they are guidelines.
Always desire to learn something useful.
Never complain and never explain.
The automobile engine will come, and then I will consider my life's work complete.