Then you see the sky, only blue - you can see the tree, only green. That mind is already Enlightenment, what we call Great Love, Great Compassion, the Great Boddhisattva Way. But Zen Master Jo Ju said that a dog has no Buddha nature. If you find that, you find the true way. Life is like a floating cloud which appears.
Death is like floating cloud which disappears.
The floating cloud itself originally does not exist. Life and death, coming and going, are also like that. But there is one thing which always remains clear. It is pure and clear, not dependent on life and death.