I can, therefore I am.

To know oneself, one should assert oneself.

The secret of getting ahead is getting started.

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

Be gentle to all and stern with yourself.

You never know what motivates you.

What you do today can improve all your tomorrows.

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

If you think you can do it, you can.