After a storm comes a calm.
Things do not happen. Things are made to happen.
To be a good loser is to learn how to win.
Never complain and never explain.
Be gentle to all and stern with yourself.
Go for it now. The future is promised to no one.
If you think you can do it, you can.
To know oneself, one should assert oneself.
Know or listen to those who know.
If you're going through hell, keep going.
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.