“…And no man or woman can set himself a nobler task than actively to further the health of his fellows. MY PROPOSAL What, then, do I propose? …”

“…The germs of pneumonia, diphtheria, influenza, tuberculosis may become active from an otherwise healthy body. CAUSES OF DISEASE Thus, as Sir George Newman remarks, "it is obvious that serious disease and even death may result (a) indirectly, from dental caries, oral sepsis, inflammation of the nose, sore throat and similar conditions ; (b) directly, from persons coughing or speaking to other persons or even breathing in their faces.…”