But though Hilary throughout his whole period of authorship uses the mystical method of interpretation, never doubting that everywhere in Scripture there is a spiritual meaning which can be elicited, and that whatever sense, consistent with truth otherwise ascertained, can be extracted from it, may be extracted, yet there is a manifest increase in sobriety in his later as compared with his earlier writings. From the riotous profusion of mysticisms in the commentary on St. Matthew, where, for instance, every character and detail in the incident of St. John Baptist’s death becomes a symbol, it is a great advance to the almost Athanasian cautiousness in exegesis of the De Trinitate; though even here, especially in the early books which deal with the Old Testament, there is some extravagance and a very liberal employment of the method E.g. Trin. i. 6.. His reasons, when he gives them, are those adduced in his other writings; the inappropriateness of the words to the time when they were written, or the plea that reverence or reason bids us penetrate behind the letter. His increasing caution is due to no distrust of the principle of mysticism.