The mind of Diamond-sutra is being at the same time a fomula of being. The state of being, the mind is not uniformity but also pure mind. The method of maintenance of pure mind and the method of remove of vexation is training of Diamond-sutra. A phrase of affirmation and denial in Diamond-sutra is a free function of non-attachment(應無所住 而生其心)'. Among this phrase, a free function is to come under affirmation and non-attachment is to come under denial. The structure of logic in Diamond-sutra is Affirmation - Denial - Superiority. The other, the three elementary principles of kungan-training are Faiths, Doubts, and Efforts. So, we can among this three elementary principles, Faiths is connected with Affirmation, Doubts is connected with Denial, and Efforts is connected with Superiority. Between with Diamond-sutra and the three elementary principles of kungan-training, we can find the one the same structure. Substantially, both of them are intend of doing perfection about training and enlightenment.
