I can, therefore I am.

The dog that trots about finds a bone.

Things do not happen. Things are made to happen.

Be kind whenever possible. It is always possible.

If you think you can do it, you can.

What you do today can improve all your tomorrows.

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

To know oneself, one should assert oneself.

Never complain and never explain.