But the line dividing good and evil cuts through the heart of every human being, and who is willing to destroy a piece of his own heart?
If only it were a line. Or even a vague boundary between clearly defined good and clearly defined evil. Or if good and evil were objectively verifiable notions.
I think the intermediate value theorem covers this. Meaning if a function has positive and negative values (good and evil) and it is continuous (I would assume a "vague boundary" or "grey area" or "goodness spectrum" to be continuous) then there must be at least one zero value. That zero value is the boundary.
Here's the new thread for posting quotes, with the usual rules: