I can, therefore I am.

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

If you're going through hell, keep going.

Wherever you are - be all there.

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

What you do today can improve all your tomorrows.

Know or listen to those who know.

To know oneself, one should assert oneself.

The secret of getting ahead is getting started.