Definition of "nonresistance"

I knew but little, no more than other men of what has been taught or written on the subject of non-resistance in former times.

1894, Leo Tolstoï [i.e., Leo Tolstoy], “Introductory”, in Constance Garnett, transl., The Kingdom of God is within You: or, Christianity Not as a Mystical Doctrine, but as a New Life-conception. […], London: Walter Scott, […], page 2