Just take one thing out and the whole palace, the whole edifice of the human mind collapses. Take effort out of it and desiring disappears, imagination disappears, past and future disappear, or take desire out and effort disappears and time disappears and ego disappears. Just take one thing out of the gestalt and the whole gestalt simply disappears; it cannot exist without certain things. Those are the very essentials of it - effort is one of the essentials. Hence all the great Masters of the world have taught about grace.