Once a disease has entered the body, all parts which are healthy must fight it: not one alone, but all. Because a disease might mean their common death. Nature knows this; and Nature attacks the disease with whatever help she can muster.

Summary

This quote highlights the importance of unity in combating disease. When a body is affected by a disease, it is not enough for just one part to fight it; all the healthy parts must come together to combat the illness. The quote emphasizes that if the disease is left unopposed, it could lead to the collective demise of the body. Nature itself recognizes this and endeavors to assist by marshaling all available resources to attack the disease. This quote serves as a metaphor for the collaborative effort required to overcome challenges and highlights the innate tendencies of nature to support and heal.