To know nothing is the only happiness,

"The first and foremost aim of Zen, consequently, is to break the net of our concepts -which is why it has been termed by some a philosophy of "no mind." A number of schools of Occidental psychological therapy hold that what we all most need an are seeking is a meaning for our lives. For some, this may be a help; but all it helps is the intellect, and when the intellect sets to work on life with its names and categories, recongnitions of relationship and definitions of meaning, what is inwardmost is readily lost. Zen, on the contrary, holds the realization that life and the sense of life are antecent to meaning; the idea being to let life come and not name it. It will then push you right back to where you live- where you are, and not where you named."

That I want nothing,” said the Prince, “or that I know not what I want, is the cause of my complaint; if I had any known want, I should have a certain wish; that wish would excite endeavour, and I should not then repine to see the sun move so slowly towards the western mountains, or to lament when the day breaks, and sleep will no longer hide me from myself.

In so far as we understand, we can desire nothing but that which must be, nor, in an absolute sense, can we find contentment in anything but truth.

If you want to travel the Way of Buddhas and Zen masters, then expect nothing, seek nothing, and grasp nothing.

Nothing is easy. But who wants nothing?

Nothing is good. Nothing is bad. When this dawns in your consciousness, suddenly you are together,all fragments have disappeared into one unity. You are crystallized,you are centered. This is one of the greatest contributions of Eastern consciousness to the world

One should not want to be anything but what one is, because it creates unhappiness.

Buddha says: Look into the nature of desire. Watch the movement of desire; it is very subtle. And you will be able to see two things: one, that desire by its very nature is unfulfillable. And second, the moment you understand that desire is unfulfillable, desire disappears and you are left desireless. That is the state of peace, silence, tranquility. That is the state of fulfillment! People never come to fulfillment through desire; they come to fulfillment only by transcending desire.

As the Zen Buddhist saying goes, how you do anything is how you do everything.

To reach satisfaction in all, desire satisfaction in nothing. To come to possess all, desire the possession of nothing. To arrive at being all, desire to be nothing. To come to the knowledge of all, desire the knowledge of nothing. To come to enjoy what you have not, you must go by a way in which you enjoy not. To come to the possession you have not, you must go by a way in which you possess not. To come to what you are not, you must go by a way in which you are not.

John of the Cross

Even though you read much Zen literature, you must read each sentence with a fresh mind. You should not say, “I know what Zen is,” or “I have attained enlightenment.” This is also the real secret of the arts: always be a beginner.”
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“When you are sitting in the middle of your own problem, which is more real to you: your problem or you yourself? The awareness that you are here, right now, is the ultimate fact. ”
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“Knowing that your life is short, to enjoy it day after day, moment after moment, is the life of “form is form and emptiness is emptiness.”
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“You may feel as if you are doing something special, but actually it is only the expression of your true nature; it is the activity which appeases your inmost desire. But as long as you think you are practicing zazen for the sake of something, that is not true practice.”
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“The most important thing is to forget all gaining ideas, all dualistic ideas. In other words, just practice zazen in a certain posture.

إذ الإنسان يفضل أن يريد اللاشيء على لأن لا يريد شيئاً

Zen is not some fancy, special art of living. Our teaching is just to live, always in reality, in its exact sense. To make our effort, moment after moment, is our way. In an exact sense, the only thing we actually can study in our life is that on which we are working in each moment. We cannot even study Buddha’s words.”
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“So we should be concentrated with our full mind and body on what we do; and we should be faithful, subjectively and objectively, to ourselves, and especially to our feelings. Even when you do not feel so well, it is better to express how you feel without any particular attachment or intention. So you may say, “Oh, I am sorry, I do not feel well.