修改一段给定的文本，使其更易于理解。
原文：
“Thus temporality, rather than view or insight, is his alternative to the absolute mind, while the idea of nature forms another such, and neither of these can be dealt with or expressed by allegory, which belongs, as will be seen, to an older date, and is opposed to both in essence.”
The author suggests that they have two alternatives to the absolute mind - temporality and the idea of nature. Neither of these can be conveyed through allegory, which is an older method of expression that contradicts these alternatives.