I can, therefore I am.

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

Who seeks shall find.

If you think you can do it, you can.

If you can dream it, you can do it.

To know oneself, one should assert oneself.

The most effective way to do it, is to do it.

If you're going through hell, keep going.

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