It's always too early to quit.

To be a good loser is to learn how to win.

By failing to prepare, you are preparing to fail.

Never complain and never explain.

Either you run the day or the day runs you.

If you're going through hell, keep going.

To know oneself, one should assert oneself.

Without hard work, nothing grows but weeds.

The wise does at once what the fool does at last.