“And that almost killed you?""It wasn't deep but it got infected. Infection means that the bad germs got into it. Infection's the most dangerous thing there is, Tom. Infection was what made the superflu germ kill all the people. And infection is what made people want to make the germ in the first place. An infection of the mind.”

“Unworthiness is a virus that infects the soul.”

“A child who is protected from all controversial ideas is as vulnerable as a child who is protected from every germ. The infection, when it comes- and it will come- may overwhelm the system, be it the immune system or the belief system.”

“Thin clouds form, and the shadows lengthen out. They have no breadth, as summer shadows have; there are no leaves on the trees or fat clouds in the sky to make them thick. They are gaunt, mean shadows that bite the ground like teeth. As the sun nears the horizon, its benevolent yellow begins to deepen, to become infected, until it glares an angry inflamed orange. It throws a variegated glow over the horizon.”

“But like infection is the petty thought: it creeps and hides, and wants to be nowhere--until the whole body is decayed and withered by the petty infection... Thus spoke Zarathustra.”

“Revenge is an infection of the spirit.”

“Strong delusions travel like cold germs on a sneeze.”