There are one or two things you must understand, Kemp. I must always remain in hiding for...

The Invisible Man: There are one or two things you must understand, Kemp. I must always remain in hiding for an hour after meals. The food is visible inside me until it is digested. I can only work on fine, clear days. If I work in the rain, the water can be seen on my head and shoulders. In a fog, you can see me - like a bubble. In smoky cities, the soot settles on me until you can see a dark outline. You must always be near at hand to wipe off my feet. Even dirt between my fingernails would give me away. It is difficult at first to walk down stairs. We are so accustomed to watching our feet. But, these are trivial difficulties. We shall find ways of defeating everything.