The further I read, the more I could see Clinton reading this, and trying to figure out the meaning of "is".
"The substance is the essence, the nature, of a thing which exists in its own right."
"exists in it's own right" ?
Dosen't the "essense" or "nature" of the wheat used to create the bread cease to exist when baked ?
I suppose we can dispence with the old adage ... "If it walks like a Duck ... "
I wonder if O.J. could use that excuse ... It may look like my DNA, and test like my DNA , but it's essence or nature is of a fruit pie.