In the mind of the beginner, there are no thoughts like "I have achieved something." All ego-centered thoughts limit our boundless mind. When we have no thoughts of achievement, no self-thought, then we are true beginners. Only then can we truly learn something. The mind of the beginner is a mind full of compassion. When our mind is compassionate, it is then limitless.

Therefore, the most difficult thing is to maintain the beginner's mind. You do not need to understand Zen deeply. Even though you read plenty of Zen literature, you should read each phrase with an open, clear mind. You should not say, "I know what Zen is," nor "I have achieved enlightenment." This is also the true secret of the Art: to always be a beginner.

Be very careful regarding this point. If you start practicing zazen, you will greatly appreciate the beginner's mind. This is the secret of Zen practice.