Not thinking about anything is Zen. Once you know this, walking, sitting, or lying down, everything you do is Zen.
But people of the deepest understanding look within, distracted by nothing. Since a clear mind is the Buddha, they attain the understanding of a Buddha without using the mind.
But deluded people don't realize that their own mind is the Buddha. They keep searching outside.
Our nature is the mind. And the mind is our nature.
But while success and failure depend on conditions, the mind neither waxes nor wanes.
As long as you look for a Buddha somewhere else, you'll never see that your own mind is the Buddha.
Buddha means awareness, the awareness of body and mind that prevents evil from arising in either.
If you use your mind to look for a Buddha, you won't see the Buddha.
If you use your mind to study reality, you won't understand either your mind or reality. If you study reality without using your mind, you'll understand both.
If your mind is pure, all buddha-lands are pure.
The Buddha is your real body, your original mind.
The ignorant mind, with its infinite afflictions, passions, and evils, is rooted in the three poisons. Greed, anger, and delusion.
The mind is always present. You just don't see it.
The mind is the Buddha, and the Buddha is the mind.
The mind is the root from which all things grow if you can understand the mind, everything else is included.