The Kingdom of God is Within You by Leo Tolstoy Chapter 10 Page 65

non-Christian elements of humanity can hardly be kept from attacking us, the abolition of the use of force and the substitution of public opinion for it would leave humanity quite unprotected.

They are mistaken, because force does not protect humanity, but, on the contrary, deprives it of the only possible means of really protecting itself, that is, the establishment and diffusion of a Christian public opinion. Only by the suppression of violence will a Christian public opinion cease to be corrupted, and be enabled to be diffused without hindrance, and men will then turn their efforts in the spiritual direction by which alone they can advance.

“But how are we to cast off the visible tangible protection of an armed policeman, and trust to something so intangible as public opinion?