To know oneself, one should assert oneself.
Either you run the day or the day runs you.
Be gentle to all and stern with yourself.
Well done is better than well said.
Leap, and the net will appear.
Expect problems and eat them for breakfast.
The secret of getting ahead is getting started.
Things do not happen. Things are made to happen.
I can, therefore I am.
Never complain and never explain.
The role of the teacher is to create the conditions for invention rather than provide ready-made knowledge.