Never complain and never explain.
Without hard work, nothing grows but weeds.
It's always too early to quit.
Be thine own palace, or the world's thy jail.
Know or listen to those who know.
The secret of getting ahead is getting started.
By failing to prepare, you are preparing to fail.
The most effective way to do it, is to do it.
To be a good loser is to learn how to win.
Begin to be now what you will be hereafter.
Crabbed and obscure definitions are of no use beyond a narrow circle of students, of whom probably every one has a pet one of his own.