Berashith
13 perfect and absolute parallel in logic. Thus: let us convert twice the proposition “some books are on the table”. By negativing both terms we get “Absence-of- book is not on the table”, which is precisely my equation backwards, and a thinkable thing, To reverse. the process, what do I mean when I say “some pigs, but not the black pig, are not in the sty"? I imply that the black pig is im the sty. All I have done is to represent the conversion as a change, rather than as merely another way of expressing the same thing. And “change” is really …