Honestly, reading that quote brought to mind this one:

"One bleeding-heart type asked me in a recent interview if I did not agree that 'violence begets violence.' I told him that it is my earnest endeavor to see that it does. I would like very much to ensure — and in some cases I have — that any man who offers violence to his fellow citizen begets a whole lot more in return than he can enjoy." -Jeff Cooper, "Cooper vs. Terrorism", Guns & Ammo Annual, 1975