To penetrate the buddha way is to penetrate yourself. To penetrate yourself is to forget yourself. To forget yourself is to be actualized by myriad things.To be actualized by myriad things is the dropping away of your body and mind as well as the bodies and minds of others.No trace of realization remains, and this no-trace-realization continues endlessly.
To learn what the path to Buddhahood is, is to learn what the True Self is. To learn what the True Self is, is to forget about the self. To forget about the self is to become one with the whole universe. To become one with the whole universe is to be shed of ‘my body and mind’ and ‘their bodies and minds’.
-Dogen