Shunryu Suzuki said this quote

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.”-“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. ”-“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.”-“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.”-“The most important thing is to forget all gaining ideas, all dualistic ideas. In other words, just practice zazen in a certain posture.