大方廣圓覺修多羅了義經略疏 1.968

1.968

祕密有二：一、如來之密藏，謂一乘如來知見。佛於漸教門中久默斯要故，故云究竟方便。下答云「妙覺圓照，離於華翳」等是也。二、如來即祕密，由證密藏能所無二故，三業業具皆祕密也。身密謂非色現色，如摩尼等；語密於一言中演無邊法海，如谷響等；意密無心成事等。二義之中經顯所證矣。

There are two aspects to the secret: First, the secret store of the Tathāgata, meaning the vision and knowledge of the Tathāgata of the One Vehicle. Because the Buddha remained silent about this essential point for a long time within the approach of the gradual teaching, it is called the ultimate expedient means. Below, the answer stating, "Wondrous enlightenment, shining in complete perfection, is free from flowers and cataracts," etc., refers to this. Second, the Tathāgata is himself the secret: because of realizing the secret store in which subject and object are non-dual, the instruments of his three modes of action are all secret. The secret of body means manifesting form where there is no form, like a maṇi jewel, etc.; the secret of speech means expounding the boundless ocean of teachings in a single word, like an echo in a valley, etc.; the secret of mind means accomplishing tasks without discursive thought, etc. Between the two meanings, the sūtra clarifies what has been realized.