You'll never see any two good actors approach a role in the same way.

In the given circumstances you must be rooted in the play. Do not depart from the play. Don't cut yourself off from your partner in the scene, or partners.

All action in theatre must have inner justification, be logical, coherent, and real.

Play well, or play badly, but play truly.

Don't go so deep in yourself that you no longer exist for your partner and for the character and for the play.

Who am I? What will I be? Why am I here? Where am I going?

Love the art in yourself, not yourself in the art.