It's always too early to quit.
Be kind whenever possible. It is always possible.
Never complain and never explain.
Quality is not an act, it is a habit.
Know or listen to those who know.
Without hard work, nothing grows but weeds.
Only the educated are free.
If you think you can do it, you can.
By failing to prepare, you are preparing to fail.
Either you run the day or the day runs you.
God sleeps in the minerals, awakens in plants, walks in animals, and thinks in man.
Science already contained all that was necessary, if you just brought it out.