In taiji we don't think with the mind, we direct with it. Our mind creates the apparatus that houses our being, not the other way around: we are the experiment taking place within Mind. This is most clear with principles and beliefs; they are mental constructs – axioms – that direct and enable the use of ourselves in the world at large. The use of the mind in this way enables a much deeper relaxation and internalization, but it requires an unshakable consistency; once we start directing with the mind we dare not stop otherwise we will literally fall apart at the seams.