Never complain and never explain.
By failing to prepare, you are preparing to fail.
Know or listen to those who know.
What you do today can improve all your tomorrows.
Only the educated are free.
The most effective way to do it, is to do it.
Problems are not stop signs, they are guidelines.
Quality is not an act, it is a habit.
To be a good loser is to learn how to win.
Without hard work, nothing grows but weeds.
The role of the teacher is to create the conditions for invention rather than provide ready-made knowledge.