Your mind is nirvana.
Bodhidharma
You can't know your real mind as long as you deceive yourself.
Our nature is the mind. And the mind is our nature.
But deluded people don't realize that their own mind is the Buddha. They keep searching outside.
Whoever knows that the mind is a fiction and devoid of anything real knows that his own mind neither exists nor doesn't exist.
Buddha means awareness, the awareness of body and mind that prevents evil from arising in either.
The mind is always present. You just don't see it.
As long as you look for a Buddha somewhere else, you'll never see that your own mind is the Buddha.
If you use your mind to look for a Buddha, you won't see the Buddha.
If your mind is pure, all buddha-lands are pure.