If you think you can do it, you can.

Be thine own palace, or the world's thy jail.

Either you run the day or the day runs you.

To know oneself, one should assert oneself.

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

Never complain and never explain.

What you do today can improve all your tomorrows.

You never know what motivates you.

It's always too early to quit.