I could give several references to works of high antiquity, in which the full importance of the principle is acknowledged.

我可以提供几处古代著作的参考资料，其中承认了该原则的全部重要性。

Fresh discoveries of remains in the pleiocene formation had emboldened other geologists to refer back the human species to a higher antiquity still.

上新世地层遗迹的新发现， 让其他地质学家有勇气将人类追溯到更古老的时期。