JOHN HOWARD.
I have been frequently asked, says this great man, what precautions I use to preserve myself from infections in the prisons and hospitals I visit. I here answer, next to the free goodness and mercy of the Author of my being, temperance and cleanliness are my preservatives. Trusting in Divine Providence, and believing myself in the way of my duty, I visit the most noxious cells, and while thus employed, "I fear no evil."