The best way and most effectual to overcome and win the Turks, should be if they shall perceive that thing which Christ taught and expressed in his living to shine in us. If they shall perceive that we do not highly gape for their empires, do not desire their gold and good, do not covet their possessions, but that we seek nothing else but only their souls’ health and the glory of God. This is that right true and effectuous divinity, the which in time past subdued unto Christ arrogant and proud philosophers, and also the mighty and invincible princes: and if we thus do, then shall Christ ever be present and help us.
For truly it is not meet nor convenient to declare ourselves christian men by this proof or token, if we kill very many, but rather if we save very many: not if we send thousands of heathen people to hell, but if we make many infidels faithful: not if we cruelly curse and excommunicate them, but if we with devout prayers and with all our hearts desire their health and pray unto God to send them better minds. If this be not our intent it shall sooner come to pass that we shall degenerate and turn into Turks ourselves, than that we shall cause them to become christian men.
(From Enchiridion or The Manual of the Christian Knight)