take occasion

He grew old and fretful, and captious, and I must add, which made the vice itself begin to grow surfeiting and nauseous to me, he grew worse and wickeder the older he grew, and that to such degree as is not fit to write of, and made me so weary of him that upon one of his capricious humours, which he often took occasion to trouble me with, I took occasion to be much less complaisant to him than I used to be; […]