Use "circumscription" in a sentence

1. Should the throes of change take me in the act of writing it, Hyde will tear it in pieces; but if some time shall have elapsed after I have laid it by, his wonderful selfishness and circumscription to the moment will probably save it once again from the action of his ape-like spite

2. Were I assured that this is the utmost I can reasonably expect, that assurance would be a useful circumscription of my attempts, and a guide in both the positive and negative determination of my course