"Wherever our brethren may be, let their first care be for those already converted. Their first aim must be to strengthen these in the faith and to help them save their souls. After this they may convert others not yet baptized. But let them proceed prudently and not undertake more than they can carry through. It is not desirable for them to hurry here and there to convert heathen with whom they cannot afterwards keep in touch. It is better to advance step by step and consolidate conquests already made. . . . They are not to risk their lives unnecessarily in excursions among unconquered people. The swift loss of life in God’s service may be advantageous for them. However, it is not for the greater good of the many for there are only a few laborers for the vineyard and it is difficult to replace them.”
Saint Francis Borgia to Jesuit missioners