There we strike the rock of real life and immutable human nature.

Thus marriage in his eyes was primarily the discharge of an obligation to his family and the nation, a task made all the more difficult by the immutable nature of the contract.

His London and his England are not so much literal and historical as roaring natural phenomena, their nature somehow immutable however much change we think we see from age to age.

Her mix of imperiousness and alert physicality said a great deal about the immutable nature of classicism.

To the Editor: It is easy to fall into the trap of assuming that biological accounts of human behavior deny environmental influences and assume an immutable nature.

It is from this presumption of a free, self-authored mind combined with an immutable human nature that the Lockean doctrine of "natural" rights derives.

His fate was cast by his immutable nature-" "Are you saying you killed him because it was his fate to die?

But it is possible to step back and see that Harold is attacking not homosexuality but Michael's refusal to accept its immutable nature.

In the other is the world of nature, immutable and universal.

It Is What It Is' is an idiomatic phrase, indicating the immutable nature of an object or circumstance.