I can, therefore I am.

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

Without hard work, nothing grows but weeds.

If you can dream it, you can do it.

The secret of getting ahead is getting started.

If you think you can do it, you can.

To know oneself, one should assert oneself.

Be gentle to all and stern with yourself.

By failing to prepare, you are preparing to fail.