The Art of War

According to an old story, a lord of ancient China once asked his physician, a
member of a family of healers, which of them was the most skilled in the art.
The physician, whose reputation was such that his name became synonymous
with medical science in China, replied, “My eldest brother sees the spirit of
sickness and removes it before it takes shape, so his name does not get out of the
house.
“My elder brother cures sickness when it is still extremely minute, so his
name does not get out of the neighborhood.