Religion is not any particular teaching. Religion is everywhere.

From True Emptiness The Wondrous Being Appears

So it is not a matter of whether it is possible to attain Buddhahood, or if it is possible to make a tile a jewel. But just to work, just to live in this world with this understanding is the most important point, and that is our practice. That is true zazen.

Ego is a social institution with no physical reality. The ego is simply your symbol of yourself.

Although we have no actual written communications from the world of emptiness, we have some hints or suggestions about what is going on in that world, and that is, you might say, enlightenment. When you see plum blossoms or hear the sound of a small stone hitting bamboo, that is a letter from the world of emptiness.

We die, and we do not die.

Moment after moment, completely devote yourself to listening to your inner voice.