Without hard work, nothing grows but weeds.
Things do not happen. Things are made to happen.
To know oneself, one should assert oneself.
Wherever you are - be all there.
Know or listen to those who know.
Quality is not an act, it is a habit.
It's always too early to quit.
Be gentle to all and stern with yourself.
To be a good loser is to learn how to win.
Be thine own palace, or the world's thy jail.
That is a secondary teacher conception - the writer as an observer.