大毘盧遮那成佛經疏 2.36

2.36

Sixth: regarding "What is the mind of intellect? It means according with and cultivating superior and preeminent dharmas": this means that among diverse teachings, this person always selects with intellect what is superior and what is inferior, what should be accepted and what should not be accepted, taking the superior ones and only then putting them into practice; this is the mark of non-delusion. However, dharmas that transcend ordinary humans are not things that the power of intellect and deliberation can reach; only those with faith can enter. Therefore, contemplating [the defect of] the difficulty of worldly wisdom and cleverness of speech is its antidote.