Powerful as were his own feelings, almost tempting him to throw himself at her feet, and make a full acknowledgment of his unvaried and never-ceasing love; yet his recollections of Harcourt, and circumstances therewith connected, the certainty of his expected arrival in England, restrained his utterance, threw a sort of spell over him, enchained by a species of self-command insupportably agonizing.
Source: wiktionary